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Finding the Fourth Proportional to 58,809.68, 81,170.19 and 36,168.15

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Solution

The fourth proportional to 58,809.68, 81,170.19 and 36,168.15 is: 49,919.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,809.68 : 81,170.19 = 36,168.15 : x
  2. Step 2: Convert to fraction form
    58,809.68/81,170.19 = 36,168.15/x
  3. Step 3: Cross multiply
    58,809.68x = 81,170.19 × 36,168.15
  4. Step 4: Simplify right side
    58,809.68x = 2,935,775,607.45
  5. Step 5: Solve for x
    x = 2,935,775,607.45/58,809.68
  6. Step 6: Final answer
    x = 49,919.94

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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.