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Finding the Fourth Proportional to 82,373.80, 123,560.70 and 23,211.40

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Solution

The fourth proportional to 82,373.80, 123,560.70 and 23,211.40 is: 34,817.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,373.80 : 123,560.70 = 23,211.40 : x
  2. Step 2: Convert to fraction form
    82,373.80/123,560.70 = 23,211.40/x
  3. Step 3: Cross multiply
    82,373.80x = 123,560.70 × 23,211.40
  4. Step 4: Simplify right side
    82,373.80x = 2,868,016,831.98
  5. Step 5: Solve for x
    x = 2,868,016,831.98/82,373.80
  6. Step 6: Final answer
    x = 34,817.10

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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.