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Finding the Fourth Proportional to 71,401.23, 98,578.47 and 45,951.78

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Solution

The fourth proportional to 71,401.23, 98,578.47 and 45,951.78 is: 63,442.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,401.23 : 98,578.47 = 45,951.78 : x
  2. Step 2: Convert to fraction form
    71,401.23/98,578.47 = 45,951.78/x
  3. Step 3: Cross multiply
    71,401.23x = 98,578.47 × 45,951.78
  4. Step 4: Simplify right side
    71,401.23x = 4,529,856,708.17
  5. Step 5: Solve for x
    x = 4,529,856,708.17/71,401.23
  6. Step 6: Final answer
    x = 63,442.28

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1.5x scale

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.