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Finding the Fourth Proportional to 472,392,901.80, 708,589,352.70 and 443,695,087.80

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Solution

The fourth proportional to 472,392,901.80, 708,589,352.70 and 443,695,087.80 is: 665,542,631.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,901.80 : 708,589,352.70 = 443,695,087.80 : x
  2. Step 2: Convert to fraction form
    472,392,901.80/708,589,352.70 = 443,695,087.80/x
  3. Step 3: Cross multiply
    472,392,901.80x = 708,589,352.70 × 443,695,087.80
  4. Step 4: Simplify right side
    472,392,901.80x = 314,397,615,060,371,712
  5. Step 5: Solve for x
    x = 314,397,615,060,371,712/472,392,901.80
  6. Step 6: Final answer
    x = 665,542,631.70

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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.