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Finding the Fourth Proportional to 157,299.16, 217,076.17 and 85,679.01

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Solution

The fourth proportional to 157,299.16, 217,076.17 and 85,679.01 is: 118,238.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,299.16 : 217,076.17 = 85,679.01 : x
  2. Step 2: Convert to fraction form
    157,299.16/217,076.17 = 85,679.01/x
  3. Step 3: Cross multiply
    157,299.16x = 217,076.17 × 85,679.01
  4. Step 4: Simplify right side
    157,299.16x = 18,598,869,826.42
  5. Step 5: Solve for x
    x = 18,598,869,826.42/157,299.16
  6. Step 6: Final answer
    x = 118,238.84

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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.