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Finding the Fourth Proportional to 372,062.40, 558,223.20 and 161,851.20

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Solution

The fourth proportional to 372,062.40, 558,223.20 and 161,851.20 is: 242,833.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,062.40 : 558,223.20 = 161,851.20 : x
  2. Step 2: Convert to fraction form
    372,062.40/558,223.20 = 161,851.20/x
  3. Step 3: Cross multiply
    372,062.40x = 558,223.20 × 161,851.20
  4. Step 4: Simplify right side
    372,062.40x = 90,349,094,787.84
  5. Step 5: Solve for x
    x = 90,349,094,787.84/372,062.40
  6. Step 6: Final answer
    x = 242,833.18

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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.