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Finding the Fourth Proportional to 1,913,793.60, 2,870,690.40 and 1,647,854.40

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Solution

The fourth proportional to 1,913,793.60, 2,870,690.40 and 1,647,854.40 is: 2,471,781.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,793.60 : 2,870,690.40 = 1,647,854.40 : x
  2. Step 2: Convert to fraction form
    1,913,793.60/2,870,690.40 = 1,647,854.40/x
  3. Step 3: Cross multiply
    1,913,793.60x = 2,870,690.40 × 1,647,854.40
  4. Step 4: Simplify right side
    1,913,793.60x = 4,730,479,806,677.76
  5. Step 5: Solve for x
    x = 4,730,479,806,677.76/1,913,793.60
  6. Step 6: Final answer
    x = 2,471,781.60

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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.