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Finding the Fourth Proportional to 1,234,914,544.86, 1,704,229,996.95 and 678,021,063.90

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Solution

The fourth proportional to 1,234,914,544.86, 1,704,229,996.95 and 678,021,063.90 is: 935,695,381.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234,914,544.86 : 1,704,229,996.95 = 678,021,063.90 : x
  2. Step 2: Convert to fraction form
    1,234,914,544.86/1,704,229,996.95 = 678,021,063.90/x
  3. Step 3: Cross multiply
    1,234,914,544.86x = 1,704,229,996.95 × 678,021,063.90
  4. Step 4: Simplify right side
    1,234,914,544.86x = 1,155,503,835,662,332,672
  5. Step 5: Solve for x
    x = 1,155,503,835,662,332,672/1,234,914,544.86
  6. Step 6: Final answer
    x = 935,695,381.09

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.