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Finding the Fourth Proportional to 157,611.62, 217,504.74 and 85,993.14

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Solution

The fourth proportional to 157,611.62, 217,504.74 and 85,993.14 is: 118,670.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,611.62 : 217,504.74 = 85,993.14 : x
  2. Step 2: Convert to fraction form
    157,611.62/217,504.74 = 85,993.14/x
  3. Step 3: Cross multiply
    157,611.62x = 217,504.74 × 85,993.14
  4. Step 4: Simplify right side
    157,611.62x = 18,703,916,695.60
  5. Step 5: Solve for x
    x = 18,703,916,695.60/157,611.62
  6. Step 6: Final answer
    x = 118,670.92

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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.