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Finding the Fourth Proportional to 95,640.32, 143,468.80 and 25,520

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Solution

The fourth proportional to 95,640.32, 143,468.80 and 25,520 is: 38,282.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,640.32 : 143,468.80 = 25,520 : x
  2. Step 2: Convert to fraction form
    95,640.32/143,468.80 = 25,520/x
  3. Step 3: Cross multiply
    95,640.32x = 143,468.80 × 25,520
  4. Step 4: Simplify right side
    95,640.32x = 3,661,323,776.00
  5. Step 5: Solve for x
    x = 3,661,323,776.00/95,640.32
  6. Step 6: Final answer
    x = 38,282.22

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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.