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Finding the Fourth Proportional to 283,726.58, 391,542.60 and 156,404.30

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Solution

The fourth proportional to 283,726.58, 391,542.60 and 156,404.30 is: 215,837.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,726.58 : 391,542.60 = 156,404.30 : x
  2. Step 2: Convert to fraction form
    283,726.58/391,542.60 = 156,404.30/x
  3. Step 3: Cross multiply
    283,726.58x = 391,542.60 × 156,404.30
  4. Step 4: Simplify right side
    283,726.58x = 61,238,946,273.18
  5. Step 5: Solve for x
    x = 61,238,946,273.18/283,726.58
  6. Step 6: Final answer
    x = 215,837.89

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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.