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Finding the Fourth Proportional to 70,956,743.80, 106,435,115.70 and 25,512,633.40

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Solution

The fourth proportional to 70,956,743.80, 106,435,115.70 and 25,512,633.40 is: 38,268,950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,956,743.80 : 106,435,115.70 = 25,512,633.40 : x
  2. Step 2: Convert to fraction form
    70,956,743.80/106,435,115.70 = 25,512,633.40/x
  3. Step 3: Cross multiply
    70,956,743.80x = 106,435,115.70 × 25,512,633.40
  4. Step 4: Simplify right side
    70,956,743.80x = 2,715,440,087,740,684.50
  5. Step 5: Solve for x
    x = 2,715,440,087,740,684.50/70,956,743.80
  6. Step 6: Final answer
    x = 38,268,950.10

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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.