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Finding the Fourth Proportional to 13,197.51, 19,799.64 and 9,728.82

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Solution

The fourth proportional to 13,197.51, 19,799.64 and 9,728.82 is: 14,595.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,197.51 : 19,799.64 = 9,728.82 : x
  2. Step 2: Convert to fraction form
    13,197.51/19,799.64 = 9,728.82/x
  3. Step 3: Cross multiply
    13,197.51x = 19,799.64 × 9,728.82
  4. Step 4: Simplify right side
    13,197.51x = 192,627,133.62
  5. Step 5: Solve for x
    x = 192,627,133.62/13,197.51
  6. Step 6: Final answer
    x = 14,595.72

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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.