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Finding the Fourth Proportional to 86,601.60, 119,507.76 and 48,360.96

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Solution

The fourth proportional to 86,601.60, 119,507.76 and 48,360.96 is: 66,736.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,601.60 : 119,507.76 = 48,360.96 : x
  2. Step 2: Convert to fraction form
    86,601.60/119,507.76 = 48,360.96/x
  3. Step 3: Cross multiply
    86,601.60x = 119,507.76 × 48,360.96
  4. Step 4: Simplify right side
    86,601.60x = 5,779,510,001.05
  5. Step 5: Solve for x
    x = 5,779,510,001.05/86,601.60
  6. Step 6: Final answer
    x = 66,736.76

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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.