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Finding the Fourth Proportional to 1,399,010, 1,930,633.80 and 763,106

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Solution

The fourth proportional to 1,399,010, 1,930,633.80 and 763,106 is: 1,053,086.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,010 : 1,930,633.80 = 763,106 : x
  2. Step 2: Convert to fraction form
    1,399,010/1,930,633.80 = 763,106/x
  3. Step 3: Cross multiply
    1,399,010x = 1,930,633.80 × 763,106
  4. Step 4: Simplify right side
    1,399,010x = 1,473,278,236,582.80
  5. Step 5: Solve for x
    x = 1,473,278,236,582.80/1,399,010
  6. Step 6: Final answer
    x = 1,053,086.28

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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.