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Finding the Fourth Proportional to 1,787,359.47, 2,466,584.71 and 971,564.73

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Solution

The fourth proportional to 1,787,359.47, 2,466,584.71 and 971,564.73 is: 1,340,774.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,359.47 : 2,466,584.71 = 971,564.73 : x
  2. Step 2: Convert to fraction form
    1,787,359.47/2,466,584.71 = 971,564.73/x
  3. Step 3: Cross multiply
    1,787,359.47x = 2,466,584.71 × 971,564.73
  4. Step 4: Simplify right side
    1,787,359.47x = 2,396,446,701,579.73
  5. Step 5: Solve for x
    x = 2,396,446,701,579.73/1,787,359.47
  6. Step 6: Final answer
    x = 1,340,774.90

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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.