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Finding the Fourth Proportional to 157,847.55, 217,834.31 and 86,228.76

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Solution

The fourth proportional to 157,847.55, 217,834.31 and 86,228.76 is: 118,998.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,847.55 : 217,834.31 = 86,228.76 : x
  2. Step 2: Convert to fraction form
    157,847.55/217,834.31 = 86,228.76/x
  3. Step 3: Cross multiply
    157,847.55x = 217,834.31 × 86,228.76
  4. Step 4: Simplify right side
    157,847.55x = 18,783,582,005.61
  5. Step 5: Solve for x
    x = 18,783,582,005.61/157,847.55
  6. Step 6: Final answer
    x = 118,998.25

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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.