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Finding the Fourth Proportional to 83,440.48, 124,963.08 and 65,792.20

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Solution

The fourth proportional to 83,440.48, 124,963.08 and 65,792.20 is: 98,532.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,440.48 : 124,963.08 = 65,792.20 : x
  2. Step 2: Convert to fraction form
    83,440.48/124,963.08 = 65,792.20/x
  3. Step 3: Cross multiply
    83,440.48x = 124,963.08 × 65,792.20
  4. Step 4: Simplify right side
    83,440.48x = 8,221,595,951.98
  5. Step 5: Solve for x
    x = 8,221,595,951.98/83,440.48
  6. Step 6: Final answer
    x = 98,532.46

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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.