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Finding the Fourth Proportional to 10,921,441.80, 16,382,162.70 and 3,347,423.40

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Solution

The fourth proportional to 10,921,441.80, 16,382,162.70 and 3,347,423.40 is: 5,021,135.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921,441.80 : 16,382,162.70 = 3,347,423.40 : x
  2. Step 2: Convert to fraction form
    10,921,441.80/16,382,162.70 = 3,347,423.40/x
  3. Step 3: Cross multiply
    10,921,441.80x = 16,382,162.70 × 3,347,423.40
  4. Step 4: Simplify right side
    10,921,441.80x = 54,838,034,764,587.18
  5. Step 5: Solve for x
    x = 54,838,034,764,587.18/10,921,441.80
  6. Step 6: Final answer
    x = 5,021,135.10

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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.