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Finding the Fourth Proportional to 76,608,412.60, 114,912,618.90 and 31,202,793.40

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Solution

The fourth proportional to 76,608,412.60, 114,912,618.90 and 31,202,793.40 is: 46,804,190.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,608,412.60 : 114,912,618.90 = 31,202,793.40 : x
  2. Step 2: Convert to fraction form
    76,608,412.60/114,912,618.90 = 31,202,793.40/x
  3. Step 3: Cross multiply
    76,608,412.60x = 114,912,618.90 × 31,202,793.40
  4. Step 4: Simplify right side
    76,608,412.60x = 3,585,594,706,589,635.50
  5. Step 5: Solve for x
    x = 3,585,594,706,589,635.50/76,608,412.60
  6. Step 6: Final answer
    x = 46,804,190.10

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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.