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Finding the Fourth Proportional to 10,992,811.70, 16,489,217.55 and 9,229,214.90

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Solution

The fourth proportional to 10,992,811.70, 16,489,217.55 and 9,229,214.90 is: 13,843,822.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992,811.70 : 16,489,217.55 = 9,229,214.90 : x
  2. Step 2: Convert to fraction form
    10,992,811.70/16,489,217.55 = 9,229,214.90/x
  3. Step 3: Cross multiply
    10,992,811.70x = 16,489,217.55 × 9,229,214.90
  4. Step 4: Simplify right side
    10,992,811.70x = 152,182,532,301,801.50
  5. Step 5: Solve for x
    x = 152,182,532,301,801.50/10,992,811.70
  6. Step 6: Final answer
    x = 13,843,822.35

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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.