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Finding the Fourth Proportional to 3,787,781.04, 5,681,692.80 and 1,263,429.36

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Solution

The fourth proportional to 3,787,781.04, 5,681,692.80 and 1,263,429.36 is: 1,895,151.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787,781.04 : 5,681,692.80 = 1,263,429.36 : x
  2. Step 2: Convert to fraction form
    3,787,781.04/5,681,692.80 = 1,263,429.36/x
  3. Step 3: Cross multiply
    3,787,781.04x = 5,681,692.80 × 1,263,429.36
  4. Step 4: Simplify right side
    3,787,781.04x = 7,178,417,498,020.61
  5. Step 5: Solve for x
    x = 7,178,417,498,020.61/3,787,781.04
  6. Step 6: Final answer
    x = 1,895,151.12

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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.