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Finding the Fourth Proportional to 1,786,247.60, 2,679,328.20 and 1,075,737.20

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Solution

The fourth proportional to 1,786,247.60, 2,679,328.20 and 1,075,737.20 is: 1,613,579.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,247.60 : 2,679,328.20 = 1,075,737.20 : x
  2. Step 2: Convert to fraction form
    1,786,247.60/2,679,328.20 = 1,075,737.20/x
  3. Step 3: Cross multiply
    1,786,247.60x = 2,679,328.20 × 1,075,737.20
  4. Step 4: Simplify right side
    1,786,247.60x = 2,882,253,015,749.04
  5. Step 5: Solve for x
    x = 2,882,253,015,749.04/1,786,247.60
  6. Step 6: Final answer
    x = 1,613,579.78

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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.