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Finding the Fourth Proportional to 90,825,817.90, 136,238,726.85 and 90,825,817.90

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Solution

The fourth proportional to 90,825,817.90, 136,238,726.85 and 90,825,817.90 is: 136,238,726.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,825,817.90 : 136,238,726.85 = 90,825,817.90 : x
  2. Step 2: Convert to fraction form
    90,825,817.90/136,238,726.85 = 90,825,817.90/x
  3. Step 3: Cross multiply
    90,825,817.90x = 136,238,726.85 × 90,825,817.90
  4. Step 4: Simplify right side
    90,825,817.90x = 12,373,993,795,805,940
  5. Step 5: Solve for x
    x = 12,373,993,795,805,940/90,825,817.90
  6. Step 6: Final answer
    x = 136,238,726.85

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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.