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Finding the Fourth Proportional to 575,672.40, 862,342.20 and 326,062.80

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Solution

The fourth proportional to 575,672.40, 862,342.20 and 326,062.80 is: 488,433.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,672.40 : 862,342.20 = 326,062.80 : x
  2. Step 2: Convert to fraction form
    575,672.40/862,342.20 = 326,062.80/x
  3. Step 3: Cross multiply
    575,672.40x = 862,342.20 × 326,062.80
  4. Step 4: Simplify right side
    575,672.40x = 281,177,712,290.16
  5. Step 5: Solve for x
    x = 281,177,712,290.16/575,672.40
  6. Step 6: Final answer
    x = 488,433.55

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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.