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Finding the Fourth Proportional to 472,392,686.60, 708,589,029.90 and 437,955,309.80

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Solution

The fourth proportional to 472,392,686.60, 708,589,029.90 and 437,955,309.80 is: 656,932,964.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,392,686.60 : 708,589,029.90 = 437,955,309.80 : x
  2. Step 2: Convert to fraction form
    472,392,686.60/708,589,029.90 = 437,955,309.80/x
  3. Step 3: Cross multiply
    472,392,686.60x = 708,589,029.90 × 437,955,309.80
  4. Step 4: Simplify right side
    472,392,686.60x = 310,330,328,110,735,936
  5. Step 5: Solve for x
    x = 310,330,328,110,735,936/472,392,686.60
  6. Step 6: Final answer
    x = 656,932,964.70

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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.