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Finding the Fourth Proportional to 73,813,372.80, 110,720,059.20 and 70,454,140.80

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Solution

The fourth proportional to 73,813,372.80, 110,720,059.20 and 70,454,140.80 is: 105,681,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,813,372.80 : 110,720,059.20 = 70,454,140.80 : x
  2. Step 2: Convert to fraction form
    73,813,372.80/110,720,059.20 = 70,454,140.80/x
  3. Step 3: Cross multiply
    73,813,372.80x = 110,720,059.20 × 70,454,140.80
  4. Step 4: Simplify right side
    73,813,372.80x = 7,800,686,640,261,135
  5. Step 5: Solve for x
    x = 7,800,686,640,261,135/73,813,372.80
  6. Step 6: Final answer
    x = 105,681,211.20

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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.