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Finding the Fourth Proportional to 86,003.57, 118,687.87 and 47,763.72

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Solution

The fourth proportional to 86,003.57, 118,687.87 and 47,763.72 is: 65,915.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,003.57 : 118,687.87 = 47,763.72 : x
  2. Step 2: Convert to fraction form
    86,003.57/118,687.87 = 47,763.72/x
  3. Step 3: Cross multiply
    86,003.57x = 118,687.87 × 47,763.72
  4. Step 4: Simplify right side
    86,003.57x = 5,668,974,190.08
  5. Step 5: Solve for x
    x = 5,668,974,190.08/86,003.57
  6. Step 6: Final answer
    x = 65,915.57

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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.