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Finding the Fourth Proportional to 10,961,894.20, 16,419,221.70 and 9,072,326.20

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Solution

The fourth proportional to 10,961,894.20, 16,419,221.70 and 9,072,326.20 is: 13,588,941.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961,894.20 : 16,419,221.70 = 9,072,326.20 : x
  2. Step 2: Convert to fraction form
    10,961,894.20/16,419,221.70 = 9,072,326.20/x
  3. Step 3: Cross multiply
    10,961,894.20x = 16,419,221.70 × 9,072,326.20
  4. Step 4: Simplify right side
    10,961,894.20x = 148,960,535,212,518.53
  5. Step 5: Solve for x
    x = 148,960,535,212,518.53/10,961,894.20
  6. Step 6: Final answer
    x = 13,588,941.15

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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.