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Finding the Fourth Proportional to 125,339.20, 172,908.48 and 75,028.48

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Solution

The fourth proportional to 125,339.20, 172,908.48 and 75,028.48 is: 103,503.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,339.20 : 172,908.48 = 75,028.48 : x
  2. Step 2: Convert to fraction form
    125,339.20/172,908.48 = 75,028.48/x
  3. Step 3: Cross multiply
    125,339.20x = 172,908.48 × 75,028.48
  4. Step 4: Simplify right side
    125,339.20x = 12,973,060,433.51
  5. Step 5: Solve for x
    x = 12,973,060,433.51/125,339.20
  6. Step 6: Final answer
    x = 103,503.62

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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.