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Finding the Fourth Proportional to 86,538.85, 119,407.84 and 65,800.22

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Solution

The fourth proportional to 86,538.85, 119,407.84 and 65,800.22 is: 90,792.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,538.85 : 119,407.84 = 65,800.22 : x
  2. Step 2: Convert to fraction form
    86,538.85/119,407.84 = 65,800.22/x
  3. Step 3: Cross multiply
    86,538.85x = 119,407.84 × 65,800.22
  4. Step 4: Simplify right side
    86,538.85x = 7,857,061,380.19
  5. Step 5: Solve for x
    x = 7,857,061,380.19/86,538.85
  6. Step 6: Final answer
    x = 90,792.30

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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.