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Finding the Fourth Proportional to 6,652,209.60, 9,978,314.40 and 1,859,891.18

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Solution

The fourth proportional to 6,652,209.60, 9,978,314.40 and 1,859,891.18 is: 2,789,836.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,652,209.60 : 9,978,314.40 = 1,859,891.18 : x
  2. Step 2: Convert to fraction form
    6,652,209.60/9,978,314.40 = 1,859,891.18/x
  3. Step 3: Cross multiply
    6,652,209.60x = 9,978,314.40 × 1,859,891.18
  4. Step 4: Simplify right side
    6,652,209.60x = 18,558,578,943,826.99
  5. Step 5: Solve for x
    x = 18,558,578,943,826.99/6,652,209.60
  6. Step 6: Final answer
    x = 2,789,836.77

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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.