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Finding the Fourth Proportional to 86,711.83, 119,646.99 and 48,459.15

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Solution

The fourth proportional to 86,711.83, 119,646.99 and 48,459.15 is: 66,865.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,711.83 : 119,646.99 = 48,459.15 : x
  2. Step 2: Convert to fraction form
    86,711.83/119,646.99 = 48,459.15/x
  3. Step 3: Cross multiply
    86,711.83x = 119,646.99 × 48,459.15
  4. Step 4: Simplify right side
    86,711.83x = 5,797,991,435.46
  5. Step 5: Solve for x
    x = 5,797,991,435.46/86,711.83
  6. Step 6: Final answer
    x = 66,865.06

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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.