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Finding the Fourth Proportional to 104,060.60, 155,630.10 and 87,471.80

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Solution

The fourth proportional to 104,060.60, 155,630.10 and 87,471.80 is: 130,820.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,060.60 : 155,630.10 = 87,471.80 : x
  2. Step 2: Convert to fraction form
    104,060.60/155,630.10 = 87,471.80/x
  3. Step 3: Cross multiply
    104,060.60x = 155,630.10 × 87,471.80
  4. Step 4: Simplify right side
    104,060.60x = 13,613,244,981.18
  5. Step 5: Solve for x
    x = 13,613,244,981.18/104,060.60
  6. Step 6: Final answer
    x = 130,820.36

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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.