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Finding the Fourth Proportional to 922,861.20, 1,384,291.80 and 863,374.80

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Solution

The fourth proportional to 922,861.20, 1,384,291.80 and 863,374.80 is: 1,295,062.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,861.20 : 1,384,291.80 = 863,374.80 : x
  2. Step 2: Convert to fraction form
    922,861.20/1,384,291.80 = 863,374.80/x
  3. Step 3: Cross multiply
    922,861.20x = 1,384,291.80 × 863,374.80
  4. Step 4: Simplify right side
    922,861.20x = 1,195,162,655,966.64
  5. Step 5: Solve for x
    x = 1,195,162,655,966.64/922,861.20
  6. Step 6: Final answer
    x = 1,295,062.20

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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.