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Finding the Fourth Proportional to 85,144.88, 117,503.57 and 47,419.13

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Solution

The fourth proportional to 85,144.88, 117,503.57 and 47,419.13 is: 65,440.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,144.88 : 117,503.57 = 47,419.13 : x
  2. Step 2: Convert to fraction form
    85,144.88/117,503.57 = 47,419.13/x
  3. Step 3: Cross multiply
    85,144.88x = 117,503.57 × 47,419.13
  4. Step 4: Simplify right side
    85,144.88x = 5,571,916,592.32
  5. Step 5: Solve for x
    x = 5,571,916,592.32/85,144.88
  6. Step 6: Final answer
    x = 65,440.42

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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.