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Finding the Fourth Proportional to 618,641.39, 928,032.18 and 555,070.94

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Solution

The fourth proportional to 618,641.39, 928,032.18 and 555,070.94 is: 832,669.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,641.39 : 928,032.18 = 555,070.94 : x
  2. Step 2: Convert to fraction form
    618,641.39/928,032.18 = 555,070.94/x
  3. Step 3: Cross multiply
    618,641.39x = 928,032.18 × 555,070.94
  4. Step 4: Simplify right side
    618,641.39x = 515,123,689,862.69
  5. Step 5: Solve for x
    x = 515,123,689,862.69/618,641.39
  6. Step 6: Final answer
    x = 832,669.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.