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Finding the Fourth Proportional to 90,217,177.30, 135,325,765.95 and 90,217,177.30

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Solution

The fourth proportional to 90,217,177.30, 135,325,765.95 and 90,217,177.30 is: 135,325,765.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,217,177.30 : 135,325,765.95 = 90,217,177.30 : x
  2. Step 2: Convert to fraction form
    90,217,177.30/135,325,765.95 = 90,217,177.30/x
  3. Step 3: Cross multiply
    90,217,177.30x = 135,325,765.95 × 90,217,177.30
  4. Step 4: Simplify right side
    90,217,177.30x = 12,208,708,619,969,452
  5. Step 5: Solve for x
    x = 12,208,708,619,969,452/90,217,177.30
  6. Step 6: Final answer
    x = 135,325,765.95

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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.