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Finding the Fourth Proportional to 86,312.96, 119,109.12 and 48,582.08

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Solution

The fourth proportional to 86,312.96, 119,109.12 and 48,582.08 is: 67,041.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,312.96 : 119,109.12 = 48,582.08 : x
  2. Step 2: Convert to fraction form
    86,312.96/119,109.12 = 48,582.08/x
  3. Step 3: Cross multiply
    86,312.96x = 119,109.12 × 48,582.08
  4. Step 4: Simplify right side
    86,312.96x = 5,786,568,796.57
  5. Step 5: Solve for x
    x = 5,786,568,796.57/86,312.96
  6. Step 6: Final answer
    x = 67,041.71

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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.