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Finding the Fourth Proportional to 113,221.73, 156,242.62 and 64,822.06

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Solution

The fourth proportional to 113,221.73, 156,242.62 and 64,822.06 is: 89,452.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,221.73 : 156,242.62 = 64,822.06 : x
  2. Step 2: Convert to fraction form
    113,221.73/156,242.62 = 64,822.06/x
  3. Step 3: Cross multiply
    113,221.73x = 156,242.62 × 64,822.06
  4. Step 4: Simplify right side
    113,221.73x = 10,127,967,935.54
  5. Step 5: Solve for x
    x = 10,127,967,935.54/113,221.73
  6. Step 6: Final answer
    x = 89,452.51

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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.