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Finding the Fourth Proportional to 71,430.39, 107,148.15 and 27,060.39

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Solution

The fourth proportional to 71,430.39, 107,148.15 and 27,060.39 is: 40,591.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,430.39 : 107,148.15 = 27,060.39 : x
  2. Step 2: Convert to fraction form
    71,430.39/107,148.15 = 27,060.39/x
  3. Step 3: Cross multiply
    71,430.39x = 107,148.15 × 27,060.39
  4. Step 4: Simplify right side
    71,430.39x = 2,899,470,726.78
  5. Step 5: Solve for x
    x = 2,899,470,726.78/71,430.39
  6. Step 6: Final answer
    x = 40,591.56

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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.