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Finding the Fourth Proportional to 131,808.80, 197,713.20 and 124,032.80

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Solution

The fourth proportional to 131,808.80, 197,713.20 and 124,032.80 is: 186,049.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,808.80 : 197,713.20 = 124,032.80 : x
  2. Step 2: Convert to fraction form
    131,808.80/197,713.20 = 124,032.80/x
  3. Step 3: Cross multiply
    131,808.80x = 197,713.20 × 124,032.80
  4. Step 4: Simplify right side
    131,808.80x = 24,522,921,792.96
  5. Step 5: Solve for x
    x = 24,522,921,792.96/131,808.80
  6. Step 6: Final answer
    x = 186,049.20

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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.