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Finding the Fourth Proportional to 156,057.60, 233,690.40 and 85,857.60

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Solution

The fourth proportional to 156,057.60, 233,690.40 and 85,857.60 is: 128,568.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,057.60 : 233,690.40 = 85,857.60 : x
  2. Step 2: Convert to fraction form
    156,057.60/233,690.40 = 85,857.60/x
  3. Step 3: Cross multiply
    156,057.60x = 233,690.40 × 85,857.60
  4. Step 4: Simplify right side
    156,057.60x = 20,064,096,887.04
  5. Step 5: Solve for x
    x = 20,064,096,887.04/156,057.60
  6. Step 6: Final answer
    x = 128,568.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.