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Finding the Fourth Proportional to 201,568.27, 278,157.21 and 110,915.74

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Solution

The fourth proportional to 201,568.27, 278,157.21 and 110,915.74 is: 153,059.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,568.27 : 278,157.21 = 110,915.74 : x
  2. Step 2: Convert to fraction form
    201,568.27/278,157.21 = 110,915.74/x
  3. Step 3: Cross multiply
    201,568.27x = 278,157.21 × 110,915.74
  4. Step 4: Simplify right side
    201,568.27x = 30,852,012,783.49
  5. Step 5: Solve for x
    x = 30,852,012,783.49/201,568.27
  6. Step 6: Final answer
    x = 153,059.87

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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.