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Finding the Fourth Proportional to 372,139.76, 558,211.26 and 119,458.64

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Solution

The fourth proportional to 372,139.76, 558,211.26 and 119,458.64 is: 179,188.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,139.76 : 558,211.26 = 119,458.64 : x
  2. Step 2: Convert to fraction form
    372,139.76/558,211.26 = 119,458.64/x
  3. Step 3: Cross multiply
    372,139.76x = 558,211.26 × 119,458.64
  4. Step 4: Simplify right side
    372,139.76x = 66,683,157,952.29
  5. Step 5: Solve for x
    x = 66,683,157,952.29/372,139.76
  6. Step 6: Final answer
    x = 179,188.48

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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.