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Finding the Fourth Proportional to 66,294.72, 99,407.52 and 31,224.96

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Solution

The fourth proportional to 66,294.72, 99,407.52 and 31,224.96 is: 46,821.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,294.72 : 99,407.52 = 31,224.96 : x
  2. Step 2: Convert to fraction form
    66,294.72/99,407.52 = 31,224.96/x
  3. Step 3: Cross multiply
    66,294.72x = 99,407.52 × 31,224.96
  4. Step 4: Simplify right side
    66,294.72x = 3,103,995,835.70
  5. Step 5: Solve for x
    x = 3,103,995,835.70/66,294.72
  6. Step 6: Final answer
    x = 46,821.16

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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.