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Finding the Fourth Proportional to 71,232.18, 106,805.11 and 49,021.15

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Solution

The fourth proportional to 71,232.18, 106,805.11 and 49,021.15 is: 73,502.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,232.18 : 106,805.11 = 49,021.15 : x
  2. Step 2: Convert to fraction form
    71,232.18/106,805.11 = 49,021.15/x
  3. Step 3: Cross multiply
    71,232.18x = 106,805.11 × 49,021.15
  4. Step 4: Simplify right side
    71,232.18x = 5,235,709,082.81
  5. Step 5: Solve for x
    x = 5,235,709,082.81/71,232.18
  6. Step 6: Final answer
    x = 73,502.01

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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.