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Finding the Fourth Proportional to 389,980.48, 584,854.48 and 165,337.31

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Solution

The fourth proportional to 389,980.48, 584,854.48 and 165,337.31 is: 247,956.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,980.48 : 584,854.48 = 165,337.31 : x
  2. Step 2: Convert to fraction form
    389,980.48/584,854.48 = 165,337.31/x
  3. Step 3: Cross multiply
    389,980.48x = 584,854.48 × 165,337.31
  4. Step 4: Simplify right side
    389,980.48x = 96,698,266,464.65
  5. Step 5: Solve for x
    x = 96,698,266,464.65/389,980.48
  6. Step 6: Final answer
    x = 247,956.68

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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.