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Finding the Fourth Proportional to 372,221.10, 558,404.55 and 158,988.60

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Solution

The fourth proportional to 372,221.10, 558,404.55 and 158,988.60 is: 238,514.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,221.10 : 558,404.55 = 158,988.60 : x
  2. Step 2: Convert to fraction form
    372,221.10/558,404.55 = 158,988.60/x
  3. Step 3: Cross multiply
    372,221.10x = 558,404.55 × 158,988.60
  4. Step 4: Simplify right side
    372,221.10x = 88,779,957,638.13
  5. Step 5: Solve for x
    x = 88,779,957,638.13/372,221.10
  6. Step 6: Final answer
    x = 238,514.04

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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.