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Finding the Fourth Proportional to 15,888.55, 21,923.04 and 9,600.94

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Solution

The fourth proportional to 15,888.55, 21,923.04 and 9,600.94 is: 13,247.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,888.55 : 21,923.04 = 9,600.94 : x
  2. Step 2: Convert to fraction form
    15,888.55/21,923.04 = 9,600.94/x
  3. Step 3: Cross multiply
    15,888.55x = 21,923.04 × 9,600.94
  4. Step 4: Simplify right side
    15,888.55x = 210,481,791.66
  5. Step 5: Solve for x
    x = 210,481,791.66/15,888.55
  6. Step 6: Final answer
    x = 13,247.39

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1.5x scale

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.