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Finding the Fourth Proportional to 86,856.32, 119,697.92 and 69,609.10

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Solution

The fourth proportional to 86,856.32, 119,697.92 and 69,609.10 is: 95,929.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,856.32 : 119,697.92 = 69,609.10 : x
  2. Step 2: Convert to fraction form
    86,856.32/119,697.92 = 69,609.10/x
  3. Step 3: Cross multiply
    86,856.32x = 119,697.92 × 69,609.10
  4. Step 4: Simplify right side
    86,856.32x = 8,332,063,835.78
  5. Step 5: Solve for x
    x = 8,332,063,835.78/86,856.32
  6. Step 6: Final answer
    x = 95,929.27

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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.