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Finding the Fourth Proportional to 1,797,742.61, 2,480,870.05 and 981,946.81

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Solution

The fourth proportional to 1,797,742.61, 2,480,870.05 and 981,946.81 is: 1,355,078.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,797,742.61 : 2,480,870.05 = 981,946.81 : x
  2. Step 2: Convert to fraction form
    1,797,742.61/2,480,870.05 = 981,946.81/x
  3. Step 3: Cross multiply
    1,797,742.61x = 2,480,870.05 × 981,946.81
  4. Step 4: Simplify right side
    1,797,742.61x = 2,436,082,431,622.04
  5. Step 5: Solve for x
    x = 2,436,082,431,622.04/1,797,742.61
  6. Step 6: Final answer
    x = 1,355,078.54

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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.