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Finding the Fourth Proportional to 10,916,891.80, 16,343,844.90 and 10,916,891.80

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Solution

The fourth proportional to 10,916,891.80, 16,343,844.90 and 10,916,891.80 is: 16,343,844.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,916,891.80 : 16,343,844.90 = 10,916,891.80 : x
  2. Step 2: Convert to fraction form
    10,916,891.80/16,343,844.90 = 10,916,891.80/x
  3. Step 3: Cross multiply
    10,916,891.80x = 16,343,844.90 × 10,916,891.80
  4. Step 4: Simplify right side
    10,916,891.80x = 178,423,986,369,281.84
  5. Step 5: Solve for x
    x = 178,423,986,369,281.84/10,916,891.80
  6. Step 6: Final answer
    x = 16,343,844.90

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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.