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Finding the Fourth Proportional to 996,491.70, 1,391,939.10 and 996,491.70

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Solution

The fourth proportional to 996,491.70, 1,391,939.10 and 996,491.70 is: 1,391,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,491.70 : 1,391,939.10 = 996,491.70 : x
  2. Step 2: Convert to fraction form
    996,491.70/1,391,939.10 = 996,491.70/x
  3. Step 3: Cross multiply
    996,491.70x = 1,391,939.10 × 996,491.70
  4. Step 4: Simplify right side
    996,491.70x = 1,387,055,760,055.47
  5. Step 5: Solve for x
    x = 1,387,055,760,055.47/996,491.70
  6. Step 6: Final answer
    x = 1,391,939.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.