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Finding the Fourth Proportional to 115,752.70, 173,686.65 and 45,634.30

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Solution

The fourth proportional to 115,752.70, 173,686.65 and 45,634.30 is: 68,474.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,752.70 : 173,686.65 = 45,634.30 : x
  2. Step 2: Convert to fraction form
    115,752.70/173,686.65 = 45,634.30/x
  3. Step 3: Cross multiply
    115,752.70x = 173,686.65 × 45,634.30
  4. Step 4: Simplify right side
    115,752.70x = 7,926,068,692.10
  5. Step 5: Solve for x
    x = 7,926,068,692.10/115,752.70
  6. Step 6: Final answer
    x = 68,474.16

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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.