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Finding the Fourth Proportional to 127,678.72, 176,031.92 and 104,622.80

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Solution

The fourth proportional to 127,678.72, 176,031.92 and 104,622.80 is: 144,244.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,678.72 : 176,031.92 = 104,622.80 : x
  2. Step 2: Convert to fraction form
    127,678.72/176,031.92 = 104,622.80/x
  3. Step 3: Cross multiply
    127,678.72x = 176,031.92 × 104,622.80
  4. Step 4: Simplify right side
    127,678.72x = 18,416,952,359.78
  5. Step 5: Solve for x
    x = 18,416,952,359.78/127,678.72
  6. Step 6: Final answer
    x = 144,244.49

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.