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Finding the Fourth Proportional to 1,103,353.95, 1,522,629.80 and 619,918.82

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Solution

The fourth proportional to 1,103,353.95, 1,522,629.80 and 619,918.82 is: 855,488.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103,353.95 : 1,522,629.80 = 619,918.82 : x
  2. Step 2: Convert to fraction form
    1,103,353.95/1,522,629.80 = 619,918.82/x
  3. Step 3: Cross multiply
    1,103,353.95x = 1,522,629.80 × 619,918.82
  4. Step 4: Simplify right side
    1,103,353.95x = 943,906,858,200.09
  5. Step 5: Solve for x
    x = 943,906,858,200.09/1,103,353.95
  6. Step 6: Final answer
    x = 855,488.72

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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.