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Finding the Fourth Proportional to 47,309,125.20, 70,963,687.80 and 47,309,125.20

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Solution

The fourth proportional to 47,309,125.20, 70,963,687.80 and 47,309,125.20 is: 70,963,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,309,125.20 : 70,963,687.80 = 47,309,125.20 : x
  2. Step 2: Convert to fraction form
    47,309,125.20/70,963,687.80 = 47,309,125.20/x
  3. Step 3: Cross multiply
    47,309,125.20x = 70,963,687.80 × 47,309,125.20
  4. Step 4: Simplify right side
    47,309,125.20x = 3,357,229,990,783,912.50
  5. Step 5: Solve for x
    x = 3,357,229,990,783,912.50/47,309,125.20
  6. Step 6: Final answer
    x = 70,963,687.80

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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.