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Finding the Fourth Proportional to 61,338.90, 91,943.55 and 34,986.90

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Solution

The fourth proportional to 61,338.90, 91,943.55 and 34,986.90 is: 52,443.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,338.90 : 91,943.55 = 34,986.90 : x
  2. Step 2: Convert to fraction form
    61,338.90/91,943.55 = 34,986.90/x
  3. Step 3: Cross multiply
    61,338.90x = 91,943.55 × 34,986.90
  4. Step 4: Simplify right side
    61,338.90x = 3,216,819,789.50
  5. Step 5: Solve for x
    x = 3,216,819,789.50/61,338.90
  6. Step 6: Final answer
    x = 52,443.39

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1.5x scale

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.