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Finding the Fourth Proportional to 69,360, 95,706.53 and 42,121.92

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Solution

The fourth proportional to 69,360, 95,706.53 and 42,121.92 is: 58,122.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,360 : 95,706.53 = 42,121.92 : x
  2. Step 2: Convert to fraction form
    69,360/95,706.53 = 42,121.92/x
  3. Step 3: Cross multiply
    69,360x = 95,706.53 × 42,121.92
  4. Step 4: Simplify right side
    69,360x = 4,031,342,321.60
  5. Step 5: Solve for x
    x = 4,031,342,321.60/69,360
  6. Step 6: Final answer
    x = 58,122.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.