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Finding the Fourth Proportional to 86,859.84, 119,871.88 and 48,618.66

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Solution

The fourth proportional to 86,859.84, 119,871.88 and 48,618.66 is: 67,096.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,859.84 : 119,871.88 = 48,618.66 : x
  2. Step 2: Convert to fraction form
    86,859.84/119,871.88 = 48,618.66/x
  3. Step 3: Cross multiply
    86,859.84x = 119,871.88 × 48,618.66
  4. Step 4: Simplify right side
    86,859.84x = 5,828,010,177.28
  5. Step 5: Solve for x
    x = 5,828,010,177.28/86,859.84
  6. Step 6: Final answer
    x = 67,096.72

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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.