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Finding the Fourth Proportional to 13,898.73, 19,180.74 and 7,611.11

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Solution

The fourth proportional to 13,898.73, 19,180.74 and 7,611.11 is: 10,503.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,898.73 : 19,180.74 = 7,611.11 : x
  2. Step 2: Convert to fraction form
    13,898.73/19,180.74 = 7,611.11/x
  3. Step 3: Cross multiply
    13,898.73x = 19,180.74 × 7,611.11
  4. Step 4: Simplify right side
    13,898.73x = 145,986,722.02
  5. Step 5: Solve for x
    x = 145,986,722.02/13,898.73
  6. Step 6: Final answer
    x = 10,503.60

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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.