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Finding the Fourth Proportional to 107,612.80, 161,419.20 and 58,460.80

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Solution

The fourth proportional to 107,612.80, 161,419.20 and 58,460.80 is: 87,691.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,612.80 : 161,419.20 = 58,460.80 : x
  2. Step 2: Convert to fraction form
    107,612.80/161,419.20 = 58,460.80/x
  3. Step 3: Cross multiply
    107,612.80x = 161,419.20 × 58,460.80
  4. Step 4: Simplify right side
    107,612.80x = 9,436,695,567.36
  5. Step 5: Solve for x
    x = 9,436,695,567.36/107,612.80
  6. Step 6: Final answer
    x = 87,691.20

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1.5x scale

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.