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Finding the Fourth Proportional to 398,081.70, 549,398.13 and 236,937.26

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Solution

The fourth proportional to 398,081.70, 549,398.13 and 236,937.26 is: 327,000.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,081.70 : 549,398.13 = 236,937.26 : x
  2. Step 2: Convert to fraction form
    398,081.70/549,398.13 = 236,937.26/x
  3. Step 3: Cross multiply
    398,081.70x = 549,398.13 × 236,937.26
  4. Step 4: Simplify right side
    398,081.70x = 130,172,888,056.30
  5. Step 5: Solve for x
    x = 130,172,888,056.30/398,081.70
  6. Step 6: Final answer
    x = 327,000.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.