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Finding the Fourth Proportional to 1,978,195.17, 2,966,877.57 and 557,919.10

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Solution

The fourth proportional to 1,978,195.17, 2,966,877.57 and 557,919.10 is: 836,761.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,195.17 : 2,966,877.57 = 557,919.10 : x
  2. Step 2: Convert to fraction form
    1,978,195.17/2,966,877.57 = 557,919.10/x
  3. Step 3: Cross multiply
    1,978,195.17x = 2,966,877.57 × 557,919.10
  4. Step 4: Simplify right side
    1,978,195.17x = 1,655,277,667,325.48
  5. Step 5: Solve for x
    x = 1,655,277,667,325.48/1,978,195.17
  6. Step 6: Final answer
    x = 836,761.55

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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.