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Finding the Fourth Proportional to 127,402.65, 191,124.70 and 47,440.91

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Solution

The fourth proportional to 127,402.65, 191,124.70 and 47,440.91 is: 71,169.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,402.65 : 191,124.70 = 47,440.91 : x
  2. Step 2: Convert to fraction form
    127,402.65/191,124.70 = 47,440.91/x
  3. Step 3: Cross multiply
    127,402.65x = 191,124.70 × 47,440.91
  4. Step 4: Simplify right side
    127,402.65x = 9,067,130,050.69
  5. Step 5: Solve for x
    x = 9,067,130,050.69/127,402.65
  6. Step 6: Final answer
    x = 71,169.09

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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.