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Finding the Fourth Proportional to 575,568.90, 862,861.05 and 220,837.50

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Solution

The fourth proportional to 575,568.90, 862,861.05 and 220,837.50 is: 331,067.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,568.90 : 862,861.05 = 220,837.50 : x
  2. Step 2: Convert to fraction form
    575,568.90/862,861.05 = 220,837.50/x
  3. Step 3: Cross multiply
    575,568.90x = 862,861.05 × 220,837.50
  4. Step 4: Simplify right side
    575,568.90x = 190,552,077,129.38
  5. Step 5: Solve for x
    x = 190,552,077,129.38/575,568.90
  6. Step 6: Final answer
    x = 331,067.36

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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.