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Finding the Fourth Proportional to 61,215,000.40, 91,822,500.60 and 61,215,000.40

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Solution

The fourth proportional to 61,215,000.40, 91,822,500.60 and 61,215,000.40 is: 91,822,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,215,000.40 : 91,822,500.60 = 61,215,000.40 : x
  2. Step 2: Convert to fraction form
    61,215,000.40/91,822,500.60 = 61,215,000.40/x
  3. Step 3: Cross multiply
    61,215,000.40x = 91,822,500.60 × 61,215,000.40
  4. Step 4: Simplify right side
    61,215,000.40x = 5,620,914,410,958,000
  5. Step 5: Solve for x
    x = 5,620,914,410,958,000/61,215,000.40
  6. Step 6: Final answer
    x = 91,822,500.60

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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.