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Finding the Fourth Proportional to 657,712.92, 907,646.57 and 355,906.92

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Solution

The fourth proportional to 657,712.92, 907,646.57 and 355,906.92 is: 491,153.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,712.92 : 907,646.57 = 355,906.92 : x
  2. Step 2: Convert to fraction form
    657,712.92/907,646.57 = 355,906.92/x
  3. Step 3: Cross multiply
    657,712.92x = 907,646.57 × 355,906.92
  4. Step 4: Simplify right side
    657,712.92x = 323,037,696,556.61
  5. Step 5: Solve for x
    x = 323,037,696,556.61/657,712.92
  6. Step 6: Final answer
    x = 491,153.03

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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.