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Finding the Fourth Proportional to 90,825,816.48, 136,238,724.71 and 90,825,816.48

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Solution

The fourth proportional to 90,825,816.48, 136,238,724.71 and 90,825,816.48 is: 136,238,724.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,825,816.48 : 136,238,724.71 = 90,825,816.48 : x
  2. Step 2: Convert to fraction form
    90,825,816.48/136,238,724.71 = 90,825,816.48/x
  3. Step 3: Cross multiply
    90,825,816.48x = 136,238,724.71 × 90,825,816.48
  4. Step 4: Simplify right side
    90,825,816.48x = 12,373,993,407,979,702
  5. Step 5: Solve for x
    x = 12,373,993,407,979,702/90,825,816.48
  6. Step 6: Final answer
    x = 136,238,724.71

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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.