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Finding the Fourth Proportional to 83,240.84, 124,639.52 and 65,047.64

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Solution

The fourth proportional to 83,240.84, 124,639.52 and 65,047.64 is: 97,398.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,240.84 : 124,639.52 = 65,047.64 : x
  2. Step 2: Convert to fraction form
    83,240.84/124,639.52 = 65,047.64/x
  3. Step 3: Cross multiply
    83,240.84x = 124,639.52 × 65,047.64
  4. Step 4: Simplify right side
    83,240.84x = 8,107,506,626.73
  5. Step 5: Solve for x
    x = 8,107,506,626.73/83,240.84
  6. Step 6: Final answer
    x = 97,398.18

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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.