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Finding the Fourth Proportional to 71,913.64, 107,792.54 and 36,805.16

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Solution

The fourth proportional to 71,913.64, 107,792.54 and 36,805.16 is: 55,167.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,913.64 : 107,792.54 = 36,805.16 : x
  2. Step 2: Convert to fraction form
    71,913.64/107,792.54 = 36,805.16/x
  3. Step 3: Cross multiply
    71,913.64x = 107,792.54 × 36,805.16
  4. Step 4: Simplify right side
    71,913.64x = 3,967,321,681.51
  5. Step 5: Solve for x
    x = 3,967,321,681.51/71,913.64
  6. Step 6: Final answer
    x = 55,167.86

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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.