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Finding the Fourth Proportional to 132,020.40, 198,059.76 and 65,496.72

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Solution

The fourth proportional to 132,020.40, 198,059.76 and 65,496.72 is: 98,259.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,020.40 : 198,059.76 = 65,496.72 : x
  2. Step 2: Convert to fraction form
    132,020.40/198,059.76 = 65,496.72/x
  3. Step 3: Cross multiply
    132,020.40x = 198,059.76 × 65,496.72
  4. Step 4: Simplify right side
    132,020.40x = 12,972,264,643.99
  5. Step 5: Solve for x
    x = 12,972,264,643.99/132,020.40
  6. Step 6: Final answer
    x = 98,259.55

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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.