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Finding the Fourth Proportional to 36,691.16, 55,036.98 and 8,989.16

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Solution

The fourth proportional to 36,691.16, 55,036.98 and 8,989.16 is: 13,483.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,691.16 : 55,036.98 = 8,989.16 : x
  2. Step 2: Convert to fraction form
    36,691.16/55,036.98 = 8,989.16/x
  3. Step 3: Cross multiply
    36,691.16x = 55,036.98 × 8,989.16
  4. Step 4: Simplify right side
    36,691.16x = 494,736,219.14
  5. Step 5: Solve for x
    x = 494,736,219.14/36,691.16
  6. Step 6: Final answer
    x = 13,483.80

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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.