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Finding the Fourth Proportional to 82,861.80, 124,292.70 and 23,699.40

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Solution

The fourth proportional to 82,861.80, 124,292.70 and 23,699.40 is: 35,549.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,861.80 : 124,292.70 = 23,699.40 : x
  2. Step 2: Convert to fraction form
    82,861.80/124,292.70 = 23,699.40/x
  3. Step 3: Cross multiply
    82,861.80x = 124,292.70 × 23,699.40
  4. Step 4: Simplify right side
    82,861.80x = 2,945,662,414.38
  5. Step 5: Solve for x
    x = 2,945,662,414.38/82,861.80
  6. Step 6: Final answer
    x = 35,549.10

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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.