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Finding the Fourth Proportional to 828,169.80, 1,242,254.70 and 800,613.60

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Solution

The fourth proportional to 828,169.80, 1,242,254.70 and 800,613.60 is: 1,200,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,169.80 : 1,242,254.70 = 800,613.60 : x
  2. Step 2: Convert to fraction form
    828,169.80/1,242,254.70 = 800,613.60/x
  3. Step 3: Cross multiply
    828,169.80x = 1,242,254.70 × 800,613.60
  4. Step 4: Simplify right side
    828,169.80x = 994,566,007,483.92
  5. Step 5: Solve for x
    x = 994,566,007,483.92/828,169.80
  6. Step 6: Final answer
    x = 1,200,920.40

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1.5x scale

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.