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Finding the Fourth Proportional to 83,373.84, 125,128.19 and 64,609.38

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Solution

The fourth proportional to 83,373.84, 125,128.19 and 64,609.38 is: 96,966.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,373.84 : 125,128.19 = 64,609.38 : x
  2. Step 2: Convert to fraction form
    83,373.84/125,128.19 = 64,609.38/x
  3. Step 3: Cross multiply
    83,373.84x = 125,128.19 × 64,609.38
  4. Step 4: Simplify right side
    83,373.84x = 8,084,454,776.42
  5. Step 5: Solve for x
    x = 8,084,454,776.42/83,373.84
  6. Step 6: Final answer
    x = 96,966.32

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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.