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Finding the Fourth Proportional to 13,596.97, 18,759.96 and 7,931.95

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Solution

The fourth proportional to 13,596.97, 18,759.96 and 7,931.95 is: 10,943.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,596.97 : 18,759.96 = 7,931.95 : x
  2. Step 2: Convert to fraction form
    13,596.97/18,759.96 = 7,931.95/x
  3. Step 3: Cross multiply
    13,596.97x = 18,759.96 × 7,931.95
  4. Step 4: Simplify right side
    13,596.97x = 148,803,064.72
  5. Step 5: Solve for x
    x = 148,803,064.72/13,596.97
  6. Step 6: Final answer
    x = 10,943.84

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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.