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Finding the Fourth Proportional to 657,998.80, 908,029.92 and 356,192.80

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Solution

The fourth proportional to 657,998.80, 908,029.92 and 356,192.80 is: 491,541.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,998.80 : 908,029.92 = 356,192.80 : x
  2. Step 2: Convert to fraction form
    657,998.80/908,029.92 = 356,192.80/x
  3. Step 3: Cross multiply
    657,998.80x = 908,029.92 × 356,192.80
  4. Step 4: Simplify right side
    657,998.80x = 323,433,719,688.58
  5. Step 5: Solve for x
    x = 323,433,719,688.58/657,998.80
  6. Step 6: Final answer
    x = 491,541.50

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Similar ratio
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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.