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Finding the Fourth Proportional to 624,221.71, 861,428.93 and 352,301.06

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Solution

The fourth proportional to 624,221.71, 861,428.93 and 352,301.06 is: 486,177.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,221.71 : 861,428.93 = 352,301.06 : x
  2. Step 2: Convert to fraction form
    624,221.71/861,428.93 = 352,301.06/x
  3. Step 3: Cross multiply
    624,221.71x = 861,428.93 × 352,301.06
  4. Step 4: Simplify right side
    624,221.71x = 303,482,325,545.73
  5. Step 5: Solve for x
    x = 303,482,325,545.73/624,221.71
  6. Step 6: Final answer
    x = 486,177.14

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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.