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Finding the Fourth Proportional to 125,165.88, 172,730.70 and 74,855.16

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Solution

The fourth proportional to 125,165.88, 172,730.70 and 74,855.16 is: 103,301.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,165.88 : 172,730.70 = 74,855.16 : x
  2. Step 2: Convert to fraction form
    125,165.88/172,730.70 = 74,855.16/x
  3. Step 3: Cross multiply
    125,165.88x = 172,730.70 × 74,855.16
  4. Step 4: Simplify right side
    125,165.88x = 12,929,784,185.41
  5. Step 5: Solve for x
    x = 12,929,784,185.41/125,165.88
  6. Step 6: Final answer
    x = 103,301.19

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