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Finding the Fourth Proportional to 567,667.20, 783,367.92 and 313,019.04

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Solution

The fourth proportional to 567,667.20, 783,367.92 and 313,019.04 is: 431,959.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,667.20 : 783,367.92 = 313,019.04 : x
  2. Step 2: Convert to fraction form
    567,667.20/783,367.92 = 313,019.04/x
  3. Step 3: Cross multiply
    567,667.20x = 783,367.92 × 313,019.04
  4. Step 4: Simplify right side
    567,667.20x = 245,209,074,285.20
  5. Step 5: Solve for x
    x = 245,209,074,285.20/567,667.20
  6. Step 6: Final answer
    x = 431,959.21

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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.