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Finding the Fourth Proportional to 19,433.88, 29,154.96 and 7,746.48

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Solution

The fourth proportional to 19,433.88, 29,154.96 and 7,746.48 is: 11,621.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,433.88 : 29,154.96 = 7,746.48 : x
  2. Step 2: Convert to fraction form
    19,433.88/29,154.96 = 7,746.48/x
  3. Step 3: Cross multiply
    19,433.88x = 29,154.96 × 7,746.48
  4. Step 4: Simplify right side
    19,433.88x = 225,848,314.54
  5. Step 5: Solve for x
    x = 225,848,314.54/19,433.88
  6. Step 6: Final answer
    x = 11,621.37

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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.