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Finding the Fourth Proportional to 86,290.98, 119,081.30 and 48,565.23

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Solution

The fourth proportional to 86,290.98, 119,081.30 and 48,565.23 is: 67,019.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,290.98 : 119,081.30 = 48,565.23 : x
  2. Step 2: Convert to fraction form
    86,290.98/119,081.30 = 48,565.23/x
  3. Step 3: Cross multiply
    86,290.98x = 119,081.30 × 48,565.23
  4. Step 4: Simplify right side
    86,290.98x = 5,783,210,723.20
  5. Step 5: Solve for x
    x = 5,783,210,723.20/86,290.98
  6. Step 6: Final answer
    x = 67,019.88

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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.