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Finding the Fourth Proportional to 161,040.99, 241,543.02 and 42,721.56

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Solution

The fourth proportional to 161,040.99, 241,543.02 and 42,721.56 is: 64,077.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,040.99 : 241,543.02 = 42,721.56 : x
  2. Step 2: Convert to fraction form
    161,040.99/241,543.02 = 42,721.56/x
  3. Step 3: Cross multiply
    161,040.99x = 241,543.02 × 42,721.56
  4. Step 4: Simplify right side
    161,040.99x = 10,319,094,781.72
  5. Step 5: Solve for x
    x = 10,319,094,781.72/161,040.99
  6. Step 6: Final answer
    x = 64,077.44

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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.