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Finding the Fourth Proportional to 45,726.88, 68,382.96 and 45,156.64

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Solution

The fourth proportional to 45,726.88, 68,382.96 and 45,156.64 is: 67,530.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,726.88 : 68,382.96 = 45,156.64 : x
  2. Step 2: Convert to fraction form
    45,726.88/68,382.96 = 45,156.64/x
  3. Step 3: Cross multiply
    45,726.88x = 68,382.96 × 45,156.64
  4. Step 4: Simplify right side
    45,726.88x = 3,087,944,706.85
  5. Step 5: Solve for x
    x = 3,087,944,706.85/45,726.88
  6. Step 6: Final answer
    x = 67,530.19

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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.