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Finding the Fourth Proportional to 70,331,542.80, 105,420,331.80 and 24,869,936.40

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Solution

The fourth proportional to 70,331,542.80, 105,420,331.80 and 24,869,936.40 is: 37,277,682.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,331,542.80 : 105,420,331.80 = 24,869,936.40 : x
  2. Step 2: Convert to fraction form
    70,331,542.80/105,420,331.80 = 24,869,936.40/x
  3. Step 3: Cross multiply
    70,331,542.80x = 105,420,331.80 × 24,869,936.40
  4. Step 4: Simplify right side
    70,331,542.80x = 2,621,796,947,132,897.50
  5. Step 5: Solve for x
    x = 2,621,796,947,132,897.50/70,331,542.80
  6. Step 6: Final answer
    x = 37,277,682.85

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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.