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Finding the Fourth Proportional to 70,914,606.40, 106,375,408.80 and 36,902,382.40

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Solution

The fourth proportional to 70,914,606.40, 106,375,408.80 and 36,902,382.40 is: 55,355,394.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,914,606.40 : 106,375,408.80 = 36,902,382.40 : x
  2. Step 2: Convert to fraction form
    70,914,606.40/106,375,408.80 = 36,902,382.40/x
  3. Step 3: Cross multiply
    70,914,606.40x = 106,375,408.80 × 36,902,382.40
  4. Step 4: Simplify right side
    70,914,606.40x = 3,925,506,013,493,925
  5. Step 5: Solve for x
    x = 3,925,506,013,493,925/70,914,606.40
  6. Step 6: Final answer
    x = 55,355,394.51

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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.