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Finding the Fourth Proportional to 259,567.20, 389,062.80 and 101,743.20

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Solution

The fourth proportional to 259,567.20, 389,062.80 and 101,743.20 is: 152,501.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,567.20 : 389,062.80 = 101,743.20 : x
  2. Step 2: Convert to fraction form
    259,567.20/389,062.80 = 101,743.20/x
  3. Step 3: Cross multiply
    259,567.20x = 389,062.80 × 101,743.20
  4. Step 4: Simplify right side
    259,567.20x = 39,584,494,272.96
  5. Step 5: Solve for x
    x = 39,584,494,272.96/259,567.20
  6. Step 6: Final answer
    x = 152,501.91

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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.