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Finding the Fourth Proportional to 657,837.69, 907,830.92 and 386,101.56

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Solution

The fourth proportional to 657,837.69, 907,830.92 and 386,101.56 is: 532,828.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,837.69 : 907,830.92 = 386,101.56 : x
  2. Step 2: Convert to fraction form
    657,837.69/907,830.92 = 386,101.56/x
  3. Step 3: Cross multiply
    657,837.69x = 907,830.92 × 386,101.56
  4. Step 4: Simplify right side
    657,837.69x = 350,514,934,428.24
  5. Step 5: Solve for x
    x = 350,514,934,428.24/657,837.69
  6. Step 6: Final answer
    x = 532,828.90

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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.