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Finding the Fourth Proportional to 86,660.92, 119,524.08 and 56,455.72

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Solution

The fourth proportional to 86,660.92, 119,524.08 and 56,455.72 is: 77,864.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,660.92 : 119,524.08 = 56,455.72 : x
  2. Step 2: Convert to fraction form
    86,660.92/119,524.08 = 56,455.72/x
  3. Step 3: Cross multiply
    86,660.92x = 119,524.08 × 56,455.72
  4. Step 4: Simplify right side
    86,660.92x = 6,747,817,993.74
  5. Step 5: Solve for x
    x = 6,747,817,993.74/86,660.92
  6. Step 6: Final answer
    x = 77,864.60

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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.