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Finding the Fourth Proportional to 90,581.52, 135,841.56 and 34,408.08

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Solution

The fourth proportional to 90,581.52, 135,841.56 and 34,408.08 is: 51,600.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,581.52 : 135,841.56 = 34,408.08 : x
  2. Step 2: Convert to fraction form
    90,581.52/135,841.56 = 34,408.08/x
  3. Step 3: Cross multiply
    90,581.52x = 135,841.56 × 34,408.08
  4. Step 4: Simplify right side
    90,581.52x = 4,674,047,263.80
  5. Step 5: Solve for x
    x = 4,674,047,263.80/90,581.52
  6. Step 6: Final answer
    x = 51,600.45

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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.