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Finding the Fourth Proportional to 70,672,392.80, 105,929,857.20 and 27,527,256.80

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Solution

The fourth proportional to 70,672,392.80, 105,929,857.20 and 27,527,256.80 is: 41,260,218.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,672,392.80 : 105,929,857.20 = 27,527,256.80 : x
  2. Step 2: Convert to fraction form
    70,672,392.80/105,929,857.20 = 27,527,256.80/x
  3. Step 3: Cross multiply
    70,672,392.80x = 105,929,857.20 × 27,527,256.80
  4. Step 4: Simplify right side
    70,672,392.80x = 2,915,958,381,931,729
  5. Step 5: Solve for x
    x = 2,915,958,381,931,729/70,672,392.80
  6. Step 6: Final answer
    x = 41,260,218.69

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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.