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Finding the Fourth Proportional to 1,178,299, 1,626,052.62 and 641,755

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Solution

The fourth proportional to 1,178,299, 1,626,052.62 and 641,755 is: 885,621.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,299 : 1,626,052.62 = 641,755 : x
  2. Step 2: Convert to fraction form
    1,178,299/1,626,052.62 = 641,755/x
  3. Step 3: Cross multiply
    1,178,299x = 1,626,052.62 × 641,755
  4. Step 4: Simplify right side
    1,178,299x = 1,043,527,399,148.10
  5. Step 5: Solve for x
    x = 1,043,527,399,148.10/1,178,299
  6. Step 6: Final answer
    x = 885,621.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.