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Finding the Fourth Proportional to 45,600.91, 68,411.90 and 14,436.16

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Solution

The fourth proportional to 45,600.91, 68,411.90 and 14,436.16 is: 21,657.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,600.91 : 68,411.90 = 14,436.16 : x
  2. Step 2: Convert to fraction form
    45,600.91/68,411.90 = 14,436.16/x
  3. Step 3: Cross multiply
    45,600.91x = 68,411.90 × 14,436.16
  4. Step 4: Simplify right side
    45,600.91x = 987,604,720.06
  5. Step 5: Solve for x
    x = 987,604,720.06/45,600.91
  6. Step 6: Final answer
    x = 21,657.57

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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.