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Finding the Fourth Proportional to 127,861.60, 176,451.32 and 71,266.88

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Solution

The fourth proportional to 127,861.60, 176,451.32 and 71,266.88 is: 98,349.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,861.60 : 176,451.32 = 71,266.88 : x
  2. Step 2: Convert to fraction form
    127,861.60/176,451.32 = 71,266.88/x
  3. Step 3: Cross multiply
    127,861.60x = 176,451.32 × 71,266.88
  4. Step 4: Simplify right side
    127,861.60x = 12,575,135,048.28
  5. Step 5: Solve for x
    x = 12,575,135,048.28/127,861.60
  6. Step 6: Final answer
    x = 98,349.58

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1.5x scale

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.