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Finding the Fourth Proportional to 617,805,891.80, 926,694,668.10 and 311,015,619.80

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Solution

The fourth proportional to 617,805,891.80, 926,694,668.10 and 311,015,619.80 is: 466,516,296.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,805,891.80 : 926,694,668.10 = 311,015,619.80 : x
  2. Step 2: Convert to fraction form
    617,805,891.80/926,694,668.10 = 311,015,619.80/x
  3. Step 3: Cross multiply
    617,805,891.80x = 926,694,668.10 × 311,015,619.80
  4. Step 4: Simplify right side
    617,805,891.80x = 288,216,516,564,476,800
  5. Step 5: Solve for x
    x = 288,216,516,564,476,800/617,805,891.80
  6. Step 6: Final answer
    x = 466,516,296.45

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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.