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Finding the Fourth Proportional to 472,392,421.70, 708,588,632.55 and 349,948,415.30

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Solution

The fourth proportional to 472,392,421.70, 708,588,632.55 and 349,948,415.30 is: 524,922,622.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,421.70 : 708,588,632.55 = 349,948,415.30 : x
  2. Step 2: Convert to fraction form
    472,392,421.70/708,588,632.55 = 349,948,415.30/x
  3. Step 3: Cross multiply
    472,392,421.70x = 708,588,632.55 × 349,948,415.30
  4. Step 4: Simplify right side
    472,392,421.70x = 247,969,469,060,466,496
  5. Step 5: Solve for x
    x = 247,969,469,060,466,496/472,392,421.70
  6. Step 6: Final answer
    x = 524,922,622.95

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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.