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Finding the Fourth Proportional to 819,797,134.20, 1,229,695,701.30 and 740,718,713.40

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Solution

The fourth proportional to 819,797,134.20, 1,229,695,701.30 and 740,718,713.40 is: 1,111,078,070.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,797,134.20 : 1,229,695,701.30 = 740,718,713.40 : x
  2. Step 2: Convert to fraction form
    819,797,134.20/1,229,695,701.30 = 740,718,713.40/x
  3. Step 3: Cross multiply
    819,797,134.20x = 1,229,695,701.30 × 740,718,713.40
  4. Step 4: Simplify right side
    819,797,134.20x = 910,858,617,740,446,592
  5. Step 5: Solve for x
    x = 910,858,617,740,446,592/819,797,134.20
  6. Step 6: Final answer
    x = 1,111,078,070.10

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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.