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Finding the Fourth Proportional to 1,932,889.60, 2,899,334.40 and 811,763.20

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Solution

The fourth proportional to 1,932,889.60, 2,899,334.40 and 811,763.20 is: 1,217,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,932,889.60 : 2,899,334.40 = 811,763.20 : x
  2. Step 2: Convert to fraction form
    1,932,889.60/2,899,334.40 = 811,763.20/x
  3. Step 3: Cross multiply
    1,932,889.60x = 2,899,334.40 × 811,763.20
  4. Step 4: Simplify right side
    1,932,889.60x = 2,353,572,970,414.08
  5. Step 5: Solve for x
    x = 2,353,572,970,414.08/1,932,889.60
  6. Step 6: Final answer
    x = 1,217,644.80

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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.