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Finding the Fourth Proportional to 83,607.68, 115,376 and 45,880.96

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Solution

The fourth proportional to 83,607.68, 115,376 and 45,880.96 is: 63,314.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,607.68 : 115,376 = 45,880.96 : x
  2. Step 2: Convert to fraction form
    83,607.68/115,376 = 45,880.96/x
  3. Step 3: Cross multiply
    83,607.68x = 115,376 × 45,880.96
  4. Step 4: Simplify right side
    83,607.68x = 5,293,561,640.96
  5. Step 5: Solve for x
    x = 5,293,561,640.96/83,607.68
  6. Step 6: Final answer
    x = 63,314.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.