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Finding the Fourth Proportional to 1,886,891.76, 2,603,941.68 and 1,027,468.80

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Solution

The fourth proportional to 1,886,891.76, 2,603,941.68 and 1,027,468.80 is: 1,417,923.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886,891.76 : 2,603,941.68 = 1,027,468.80 : x
  2. Step 2: Convert to fraction form
    1,886,891.76/2,603,941.68 = 1,027,468.80/x
  3. Step 3: Cross multiply
    1,886,891.76x = 2,603,941.68 × 1,027,468.80
  4. Step 4: Simplify right side
    1,886,891.76x = 2,675,468,833,219.58
  5. Step 5: Solve for x
    x = 2,675,468,833,219.58/1,886,891.76
  6. Step 6: Final answer
    x = 1,417,923.85

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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.