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Finding the Fourth Proportional to 141,930.88, 195,861.96 and 77,400.88

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Solution

The fourth proportional to 141,930.88, 195,861.96 and 77,400.88 is: 106,811.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,930.88 : 195,861.96 = 77,400.88 : x
  2. Step 2: Convert to fraction form
    141,930.88/195,861.96 = 77,400.88/x
  3. Step 3: Cross multiply
    141,930.88x = 195,861.96 × 77,400.88
  4. Step 4: Simplify right side
    141,930.88x = 15,159,888,062.52
  5. Step 5: Solve for x
    x = 15,159,888,062.52/141,930.88
  6. Step 6: Final answer
    x = 106,811.77

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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.