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Finding the Fourth Proportional to 113,781.46, 170,699.56 and 43,660.78

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Solution

The fourth proportional to 113,781.46, 170,699.56 and 43,660.78 is: 65,501.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,781.46 : 170,699.56 = 43,660.78 : x
  2. Step 2: Convert to fraction form
    113,781.46/170,699.56 = 43,660.78/x
  3. Step 3: Cross multiply
    113,781.46x = 170,699.56 × 43,660.78
  4. Step 4: Simplify right side
    113,781.46x = 7,452,875,935.26
  5. Step 5: Solve for x
    x = 7,452,875,935.26/113,781.46
  6. Step 6: Final answer
    x = 65,501.67

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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.