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Finding the Fourth Proportional to 484,398,085.20, 726,597,127.80 and 484,398,085.20

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Solution

The fourth proportional to 484,398,085.20, 726,597,127.80 and 484,398,085.20 is: 726,597,127.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,398,085.20 : 726,597,127.80 = 484,398,085.20 : x
  2. Step 2: Convert to fraction form
    484,398,085.20/726,597,127.80 = 484,398,085.20/x
  3. Step 3: Cross multiply
    484,398,085.20x = 726,597,127.80 × 484,398,085.20
  4. Step 4: Simplify right side
    484,398,085.20x = 351,962,257,418,139,648
  5. Step 5: Solve for x
    x = 351,962,257,418,139,648/484,398,085.20
  6. Step 6: Final answer
    x = 726,597,127.80

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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.