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Finding the Fourth Proportional to 89,079.84, 133,619.76 and 36,479.76

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Solution

The fourth proportional to 89,079.84, 133,619.76 and 36,479.76 is: 54,719.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,079.84 : 133,619.76 = 36,479.76 : x
  2. Step 2: Convert to fraction form
    89,079.84/133,619.76 = 36,479.76/x
  3. Step 3: Cross multiply
    89,079.84x = 133,619.76 × 36,479.76
  4. Step 4: Simplify right side
    89,079.84x = 4,874,416,776.06
  5. Step 5: Solve for x
    x = 4,874,416,776.06/89,079.84
  6. Step 6: Final answer
    x = 54,719.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.