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Finding the Fourth Proportional to 993,743,139.20, 1,490,614,708.80 and 993,743,139.20

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Solution

The fourth proportional to 993,743,139.20, 1,490,614,708.80 and 993,743,139.20 is: 1,490,614,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,743,139.20 : 1,490,614,708.80 = 993,743,139.20 : x
  2. Step 2: Convert to fraction form
    993,743,139.20/1,490,614,708.80 = 993,743,139.20/x
  3. Step 3: Cross multiply
    993,743,139.20x = 1,490,614,708.80 × 993,743,139.20
  4. Step 4: Simplify right side
    993,743,139.20x = 1,481,288,140,060,605,952
  5. Step 5: Solve for x
    x = 1,481,288,140,060,605,952/993,743,139.20
  6. Step 6: Final answer
    x = 1,490,614,708.80

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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.