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Finding the Fourth Proportional to 99,660,215.20, 149,206,887.60 and 99,660,215.20

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Solution

The fourth proportional to 99,660,215.20, 149,206,887.60 and 99,660,215.20 is: 149,206,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,660,215.20 : 149,206,887.60 = 99,660,215.20 : x
  2. Step 2: Convert to fraction form
    99,660,215.20/149,206,887.60 = 99,660,215.20/x
  3. Step 3: Cross multiply
    99,660,215.20x = 149,206,887.60 × 99,660,215.20
  4. Step 4: Simplify right side
    99,660,215.20x = 14,869,990,527,538,212
  5. Step 5: Solve for x
    x = 14,869,990,527,538,212/99,660,215.20
  6. Step 6: Final answer
    x = 149,206,887.60

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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.