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Finding the Fourth Proportional to 240,615, 360,922.50 and 74,403

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Solution

The fourth proportional to 240,615, 360,922.50 and 74,403 is: 111,604.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,615 : 360,922.50 = 74,403 : x
  2. Step 2: Convert to fraction form
    240,615/360,922.50 = 74,403/x
  3. Step 3: Cross multiply
    240,615x = 360,922.50 × 74,403
  4. Step 4: Simplify right side
    240,615x = 26,853,716,767.50
  5. Step 5: Solve for x
    x = 26,853,716,767.50/240,615
  6. Step 6: Final answer
    x = 111,604.50

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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.