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Finding the Fourth Proportional to 71,666.80, 98,674.32 and 65,023.84

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Solution

The fourth proportional to 71,666.80, 98,674.32 and 65,023.84 is: 89,527.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,666.80 : 98,674.32 = 65,023.84 : x
  2. Step 2: Convert to fraction form
    71,666.80/98,674.32 = 65,023.84/x
  3. Step 3: Cross multiply
    71,666.80x = 98,674.32 × 65,023.84
  4. Step 4: Simplify right side
    71,666.80x = 6,416,183,195.79
  5. Step 5: Solve for x
    x = 6,416,183,195.79/71,666.80
  6. Step 6: Final answer
    x = 89,527.97

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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.