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Finding the Fourth Proportional to 372,428.85, 558,648.48 and 106,189.47

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Solution

The fourth proportional to 372,428.85, 558,648.48 and 106,189.47 is: 159,285.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,428.85 : 558,648.48 = 106,189.47 : x
  2. Step 2: Convert to fraction form
    372,428.85/558,648.48 = 106,189.47/x
  3. Step 3: Cross multiply
    372,428.85x = 558,648.48 × 106,189.47
  4. Step 4: Simplify right side
    372,428.85x = 59,322,586,007.51
  5. Step 5: Solve for x
    x = 59,322,586,007.51/372,428.85
  6. Step 6: Final answer
    x = 159,285.69

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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.