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Finding the Fourth Proportional to 543,277.78, 749,770.78 and 316,996.18

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Solution

The fourth proportional to 543,277.78, 749,770.78 and 316,996.18 is: 437,482.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,277.78 : 749,770.78 = 316,996.18 : x
  2. Step 2: Convert to fraction form
    543,277.78/749,770.78 = 316,996.18/x
  3. Step 3: Cross multiply
    543,277.78x = 749,770.78 × 316,996.18
  4. Step 4: Simplify right side
    543,277.78x = 237,674,473,135.62
  5. Step 5: Solve for x
    x = 237,674,473,135.62/543,277.78
  6. Step 6: Final answer
    x = 437,482.41

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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.