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Finding the Fourth Proportional to 969,640.80, 1,452,711.60 and 857,666.40

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Solution

The fourth proportional to 969,640.80, 1,452,711.60 and 857,666.40 is: 1,284,952.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    969,640.80 : 1,452,711.60 = 857,666.40 : x
  2. Step 2: Convert to fraction form
    969,640.80/1,452,711.60 = 857,666.40/x
  3. Step 3: Cross multiply
    969,640.80x = 1,452,711.60 × 857,666.40
  4. Step 4: Simplify right side
    969,640.80x = 1,245,941,928,210.24
  5. Step 5: Solve for x
    x = 1,245,941,928,210.24/969,640.80
  6. Step 6: Final answer
    x = 1,284,952.04

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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.