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Finding the Fourth Proportional to 1,193,663,616.80, 1,790,495,425.20 and 708,739,815.20

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Solution

The fourth proportional to 1,193,663,616.80, 1,790,495,425.20 and 708,739,815.20 is: 1,063,109,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193,663,616.80 : 1,790,495,425.20 = 708,739,815.20 : x
  2. Step 2: Convert to fraction form
    1,193,663,616.80/1,790,495,425.20 = 708,739,815.20/x
  3. Step 3: Cross multiply
    1,193,663,616.80x = 1,790,495,425.20 × 708,739,815.20
  4. Step 4: Simplify right side
    1,193,663,616.80x = 1,268,995,396,772,693,504
  5. Step 5: Solve for x
    x = 1,268,995,396,772,693,504/1,193,663,616.80
  6. Step 6: Final answer
    x = 1,063,109,722.80

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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.