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Finding the Fourth Proportional to 472,394,313.90, 708,591,470.85 and 437,956,937.10

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Solution

The fourth proportional to 472,394,313.90, 708,591,470.85 and 437,956,937.10 is: 656,935,405.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,394,313.90 : 708,591,470.85 = 437,956,937.10 : x
  2. Step 2: Convert to fraction form
    472,394,313.90/708,591,470.85 = 437,956,937.10/x
  3. Step 3: Cross multiply
    472,394,313.90x = 708,591,470.85 × 437,956,937.10
  4. Step 4: Simplify right side
    472,394,313.90x = 310,332,550,228,649,984
  5. Step 5: Solve for x
    x = 310,332,550,228,649,984/472,394,313.90
  6. Step 6: Final answer
    x = 656,935,405.65

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1.5x scale

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.