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Finding the Fourth Proportional to 157,416.71, 217,232.55 and 85,797.32

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Solution

The fourth proportional to 157,416.71, 217,232.55 and 85,797.32 is: 118,398.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,416.71 : 217,232.55 = 85,797.32 : x
  2. Step 2: Convert to fraction form
    157,416.71/217,232.55 = 85,797.32/x
  3. Step 3: Cross multiply
    157,416.71x = 217,232.55 × 85,797.32
  4. Step 4: Simplify right side
    157,416.71x = 18,637,969,520.60
  5. Step 5: Solve for x
    x = 18,637,969,520.60/157,416.71
  6. Step 6: Final answer
    x = 118,398.93

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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.