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Finding the Fourth Proportional to 911,351.59, 1,257,661.14 and 503,453.62

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Solution

The fourth proportional to 911,351.59, 1,257,661.14 and 503,453.62 is: 694,763.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,351.59 : 1,257,661.14 = 503,453.62 : x
  2. Step 2: Convert to fraction form
    911,351.59/1,257,661.14 = 503,453.62/x
  3. Step 3: Cross multiply
    911,351.59x = 1,257,661.14 × 503,453.62
  4. Step 4: Simplify right side
    911,351.59x = 633,174,053,666.33
  5. Step 5: Solve for x
    x = 633,174,053,666.33/911,351.59
  6. Step 6: Final answer
    x = 694,763.76

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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.