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Finding the Fourth Proportional to 127,957.89, 191,854.62 and 53,129.70

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Solution

The fourth proportional to 127,957.89, 191,854.62 and 53,129.70 is: 79,660.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,957.89 : 191,854.62 = 53,129.70 : x
  2. Step 2: Convert to fraction form
    127,957.89/191,854.62 = 53,129.70/x
  3. Step 3: Cross multiply
    127,957.89x = 191,854.62 × 53,129.70
  4. Step 4: Simplify right side
    127,957.89x = 10,193,178,404.21
  5. Step 5: Solve for x
    x = 10,193,178,404.21/127,957.89
  6. Step 6: Final answer
    x = 79,660.41

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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.