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Finding the Fourth Proportional to 85,414.45, 117,862.98 and 49,597.45

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Solution

The fourth proportional to 85,414.45, 117,862.98 and 49,597.45 is: 68,439.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,414.45 : 117,862.98 = 49,597.45 : x
  2. Step 2: Convert to fraction form
    85,414.45/117,862.98 = 49,597.45/x
  3. Step 3: Cross multiply
    85,414.45x = 117,862.98 × 49,597.45
  4. Step 4: Simplify right side
    85,414.45x = 5,845,703,257.40
  5. Step 5: Solve for x
    x = 5,845,703,257.40/85,414.45
  6. Step 6: Final answer
    x = 68,439.28

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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.