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Finding the Fourth Proportional to 1,411,694, 1,948,137.72 and 775,790

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Solution

The fourth proportional to 1,411,694, 1,948,137.72 and 775,790 is: 1,070,590.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411,694 : 1,948,137.72 = 775,790 : x
  2. Step 2: Convert to fraction form
    1,411,694/1,948,137.72 = 775,790/x
  3. Step 3: Cross multiply
    1,411,694x = 1,948,137.72 × 775,790
  4. Step 4: Simplify right side
    1,411,694x = 1,511,345,761,798.80
  5. Step 5: Solve for x
    x = 1,511,345,761,798.80/1,411,694
  6. Step 6: Final answer
    x = 1,070,590.20

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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.