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Finding the Fourth Proportional to 82,880.55, 124,319.90 and 49,609.90

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Solution

The fourth proportional to 82,880.55, 124,319.90 and 49,609.90 is: 74,414.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,880.55 : 124,319.90 = 49,609.90 : x
  2. Step 2: Convert to fraction form
    82,880.55/124,319.90 = 49,609.90/x
  3. Step 3: Cross multiply
    82,880.55x = 124,319.90 × 49,609.90
  4. Step 4: Simplify right side
    82,880.55x = 6,167,497,185.41
  5. Step 5: Solve for x
    x = 6,167,497,185.41/82,880.55
  6. Step 6: Final answer
    x = 74,414.29

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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.