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Finding the Fourth Proportional to 372,421.40, 558,391.73 and 159,328.32

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Solution

The fourth proportional to 372,421.40, 558,391.73 and 159,328.32 is: 238,889.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,421.40 : 558,391.73 = 159,328.32 : x
  2. Step 2: Convert to fraction form
    372,421.40/558,391.73 = 159,328.32/x
  3. Step 3: Cross multiply
    372,421.40x = 558,391.73 × 159,328.32
  4. Step 4: Simplify right side
    372,421.40x = 88,967,613,352.18
  5. Step 5: Solve for x
    x = 88,967,613,352.18/372,421.40
  6. Step 6: Final answer
    x = 238,889.64

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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.