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Finding the Fourth Proportional to 70,868,608.40, 106,302,912.60 and 38,536,000.40

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Solution

The fourth proportional to 70,868,608.40, 106,302,912.60 and 38,536,000.40 is: 57,804,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,868,608.40 : 106,302,912.60 = 38,536,000.40 : x
  2. Step 2: Convert to fraction form
    70,868,608.40/106,302,912.60 = 38,536,000.40/x
  3. Step 3: Cross multiply
    70,868,608.40x = 106,302,912.60 × 38,536,000.40
  4. Step 4: Simplify right side
    70,868,608.40x = 4,096,489,082,474,764.50
  5. Step 5: Solve for x
    x = 4,096,489,082,474,764.50/70,868,608.40
  6. Step 6: Final answer
    x = 57,804,000.60

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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.