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Finding the Fourth Proportional to 131,459.60, 197,189.40 and 48,342.80

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Solution

The fourth proportional to 131,459.60, 197,189.40 and 48,342.80 is: 72,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,459.60 : 197,189.40 = 48,342.80 : x
  2. Step 2: Convert to fraction form
    131,459.60/197,189.40 = 48,342.80/x
  3. Step 3: Cross multiply
    131,459.60x = 197,189.40 × 48,342.80
  4. Step 4: Simplify right side
    131,459.60x = 9,532,687,726.32
  5. Step 5: Solve for x
    x = 9,532,687,726.32/131,459.60
  6. Step 6: Final answer
    x = 72,514.20

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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.