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Finding the Fourth Proportional to 149,831.21, 224,745.28 and 86,611.11

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Solution

The fourth proportional to 149,831.21, 224,745.28 and 86,611.11 is: 129,915.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,831.21 : 224,745.28 = 86,611.11 : x
  2. Step 2: Convert to fraction form
    149,831.21/224,745.28 = 86,611.11/x
  3. Step 3: Cross multiply
    149,831.21x = 224,745.28 × 86,611.11
  4. Step 4: Simplify right side
    149,831.21x = 19,465,438,372.93
  5. Step 5: Solve for x
    x = 19,465,438,372.93/149,831.21
  6. Step 6: Final answer
    x = 129,915.78

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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.