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Finding the Fourth Proportional to 157,611.09, 217,502.58 and 85,990.89

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Solution

The fourth proportional to 157,611.09, 217,502.58 and 85,990.89 is: 118,667.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,611.09 : 217,502.58 = 85,990.89 : x
  2. Step 2: Convert to fraction form
    157,611.09/217,502.58 = 85,990.89/x
  3. Step 3: Cross multiply
    157,611.09x = 217,502.58 × 85,990.89
  4. Step 4: Simplify right side
    157,611.09x = 18,703,240,431.50
  5. Step 5: Solve for x
    x = 18,703,240,431.50/157,611.09
  6. Step 6: Final answer
    x = 118,667.03

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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.