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Finding the Fourth Proportional to 66,023.53, 98,986.04 and 39,722.11

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Solution

The fourth proportional to 66,023.53, 98,986.04 and 39,722.11 is: 59,553.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,023.53 : 98,986.04 = 39,722.11 : x
  2. Step 2: Convert to fraction form
    66,023.53/98,986.04 = 39,722.11/x
  3. Step 3: Cross multiply
    66,023.53x = 98,986.04 × 39,722.11
  4. Step 4: Simplify right side
    66,023.53x = 3,931,934,468.65
  5. Step 5: Solve for x
    x = 3,931,934,468.65/66,023.53
  6. Step 6: Final answer
    x = 59,553.53

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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.