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Finding the Fourth Proportional to 113,776.92, 170,538.21 and 42,631.11

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Solution

The fourth proportional to 113,776.92, 170,538.21 and 42,631.11 is: 63,899.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,776.92 : 170,538.21 = 42,631.11 : x
  2. Step 2: Convert to fraction form
    113,776.92/170,538.21 = 42,631.11/x
  3. Step 3: Cross multiply
    113,776.92x = 170,538.21 × 42,631.11
  4. Step 4: Simplify right side
    113,776.92x = 7,270,233,189.71
  5. Step 5: Solve for x
    x = 7,270,233,189.71/113,776.92
  6. Step 6: Final answer
    x = 63,899.02

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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.