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Finding the Fourth Proportional to 699,919.20, 965,888.24 and 381,967.20

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Solution

The fourth proportional to 699,919.20, 965,888.24 and 381,967.20 is: 527,114.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,919.20 : 965,888.24 = 381,967.20 : x
  2. Step 2: Convert to fraction form
    699,919.20/965,888.24 = 381,967.20/x
  3. Step 3: Cross multiply
    699,919.20x = 965,888.24 × 381,967.20
  4. Step 4: Simplify right side
    699,919.20x = 368,937,626,545.73
  5. Step 5: Solve for x
    x = 368,937,626,545.73/699,919.20
  6. Step 6: Final answer
    x = 527,114.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.