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Finding the Fourth Proportional to 156,843.40, 235,005.90 and 133,515.40

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Solution

The fourth proportional to 156,843.40, 235,005.90 and 133,515.40 is: 200,052.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,843.40 : 235,005.90 = 133,515.40 : x
  2. Step 2: Convert to fraction form
    156,843.40/235,005.90 = 133,515.40/x
  3. Step 3: Cross multiply
    156,843.40x = 235,005.90 × 133,515.40
  4. Step 4: Simplify right side
    156,843.40x = 31,376,906,740.86
  5. Step 5: Solve for x
    x = 31,376,906,740.86/156,843.40
  6. Step 6: Final answer
    x = 200,052.45

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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.