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Finding the Fourth Proportional to 90,689.66, 125,167.20 and 58,415.12

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Solution

The fourth proportional to 90,689.66, 125,167.20 and 58,415.12 is: 80,622.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,689.66 : 125,167.20 = 58,415.12 : x
  2. Step 2: Convert to fraction form
    90,689.66/125,167.20 = 58,415.12/x
  3. Step 3: Cross multiply
    90,689.66x = 125,167.20 × 58,415.12
  4. Step 4: Simplify right side
    90,689.66x = 7,311,657,008.06
  5. Step 5: Solve for x
    x = 7,311,657,008.06/90,689.66
  6. Step 6: Final answer
    x = 80,622.83

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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.