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Finding the Fourth Proportional to 29,808,005.20, 44,712,007.80 and 20,738,078.80

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Solution

The fourth proportional to 29,808,005.20, 44,712,007.80 and 20,738,078.80 is: 31,107,118.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,808,005.20 : 44,712,007.80 = 20,738,078.80 : x
  2. Step 2: Convert to fraction form
    29,808,005.20/44,712,007.80 = 20,738,078.80/x
  3. Step 3: Cross multiply
    29,808,005.20x = 44,712,007.80 × 20,738,078.80
  4. Step 4: Simplify right side
    29,808,005.20x = 927,241,141,062,614.62
  5. Step 5: Solve for x
    x = 927,241,141,062,614.62/29,808,005.20
  6. Step 6: Final answer
    x = 31,107,118.20

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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.