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Finding the Fourth Proportional to 73,813,311.80, 110,719,967.70 and 70,454,079.80

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Solution

The fourth proportional to 73,813,311.80, 110,719,967.70 and 70,454,079.80 is: 105,681,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,813,311.80 : 110,719,967.70 = 70,454,079.80 : x
  2. Step 2: Convert to fraction form
    73,813,311.80/110,719,967.70 = 70,454,079.80/x
  3. Step 3: Cross multiply
    73,813,311.80x = 110,719,967.70 × 70,454,079.80
  4. Step 4: Simplify right side
    73,813,311.80x = 7,800,673,439,789,222
  5. Step 5: Solve for x
    x = 7,800,673,439,789,222/73,813,311.80
  6. Step 6: Final answer
    x = 105,681,119.70

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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.