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Finding the Fourth Proportional to 2,931,752.40, 4,394,129.40 and 1,225,892.40

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Solution

The fourth proportional to 2,931,752.40, 4,394,129.40 and 1,225,892.40 is: 1,837,375.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931,752.40 : 4,394,129.40 = 1,225,892.40 : x
  2. Step 2: Convert to fraction form
    2,931,752.40/4,394,129.40 = 1,225,892.40/x
  3. Step 3: Cross multiply
    2,931,752.40x = 4,394,129.40 × 1,225,892.40
  4. Step 4: Simplify right side
    2,931,752.40x = 5,386,729,836,076.56
  5. Step 5: Solve for x
    x = 5,386,729,836,076.56/2,931,752.40
  6. Step 6: Final answer
    x = 1,837,375.43

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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.