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Finding the Fourth Proportional to 127,866.57, 176,416.72 and 74,140.85

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Solution

The fourth proportional to 127,866.57, 176,416.72 and 74,140.85 is: 102,291.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,866.57 : 176,416.72 = 74,140.85 : x
  2. Step 2: Convert to fraction form
    127,866.57/176,416.72 = 74,140.85/x
  3. Step 3: Cross multiply
    127,866.57x = 176,416.72 × 74,140.85
  4. Step 4: Simplify right side
    127,866.57x = 13,079,685,830.70
  5. Step 5: Solve for x
    x = 13,079,685,830.70/127,866.57
  6. Step 6: Final answer
    x = 102,291.68

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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.