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Finding the Fourth Proportional to 11,615.40, 17,425.53 and 3,610.98

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Solution

The fourth proportional to 11,615.40, 17,425.53 and 3,610.98 is: 5,417.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,615.40 : 17,425.53 = 3,610.98 : x
  2. Step 2: Convert to fraction form
    11,615.40/17,425.53 = 3,610.98/x
  3. Step 3: Cross multiply
    11,615.40x = 17,425.53 × 3,610.98
  4. Step 4: Simplify right side
    11,615.40x = 62,923,240.32
  5. Step 5: Solve for x
    x = 62,923,240.32/11,615.40
  6. Step 6: Final answer
    x = 5,417.23

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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.