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Finding the Fourth Proportional to 86,841.30, 119,853.88 and 55,013.16

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Solution

The fourth proportional to 86,841.30, 119,853.88 and 55,013.16 is: 75,926.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,841.30 : 119,853.88 = 55,013.16 : x
  2. Step 2: Convert to fraction form
    86,841.30/119,853.88 = 55,013.16/x
  3. Step 3: Cross multiply
    86,841.30x = 119,853.88 × 55,013.16
  4. Step 4: Simplify right side
    86,841.30x = 6,593,540,677.06
  5. Step 5: Solve for x
    x = 6,593,540,677.06/86,841.30
  6. Step 6: Final answer
    x = 75,926.32

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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.