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Finding the Fourth Proportional to 472,392,479.80, 708,588,719.70 and 441,781,478.20

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Solution

The fourth proportional to 472,392,479.80, 708,588,719.70 and 441,781,478.20 is: 662,672,217.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,479.80 : 708,588,719.70 = 441,781,478.20 : x
  2. Step 2: Convert to fraction form
    472,392,479.80/708,588,719.70 = 441,781,478.20/x
  3. Step 3: Cross multiply
    472,392,479.80x = 708,588,719.70 × 441,781,478.20
  4. Step 4: Simplify right side
    472,392,479.80x = 313,041,372,024,911,488
  5. Step 5: Solve for x
    x = 313,041,372,024,911,488/472,392,479.80
  6. Step 6: Final answer
    x = 662,672,217.30

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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.