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Finding the Fourth Proportional to 40,708, 56,172.45 and 23,715.82

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Solution

The fourth proportional to 40,708, 56,172.45 and 23,715.82 is: 32,725.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,708 : 56,172.45 = 23,715.82 : x
  2. Step 2: Convert to fraction form
    40,708/56,172.45 = 23,715.82/x
  3. Step 3: Cross multiply
    40,708x = 56,172.45 × 23,715.82
  4. Step 4: Simplify right side
    40,708x = 1,332,175,713.16
  5. Step 5: Solve for x
    x = 1,332,175,713.16/40,708
  6. Step 6: Final answer
    x = 32,725.16

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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.