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Finding the Fourth Proportional to 127,899.94, 176,501.92 and 71,311.32

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Solution

The fourth proportional to 127,899.94, 176,501.92 and 71,311.32 is: 98,409.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,899.94 : 176,501.92 = 71,311.32 : x
  2. Step 2: Convert to fraction form
    127,899.94/176,501.92 = 71,311.32/x
  3. Step 3: Cross multiply
    127,899.94x = 176,501.92 × 71,311.32
  4. Step 4: Simplify right side
    127,899.94x = 12,586,584,897.73
  5. Step 5: Solve for x
    x = 12,586,584,897.73/127,899.94
  6. Step 6: Final answer
    x = 98,409.62

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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.