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Finding the Fourth Proportional to 156,074.60, 233,715.90 and 85,874.60

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Solution

The fourth proportional to 156,074.60, 233,715.90 and 85,874.60 is: 128,594.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,074.60 : 233,715.90 = 85,874.60 : x
  2. Step 2: Convert to fraction form
    156,074.60/233,715.90 = 85,874.60/x
  3. Step 3: Cross multiply
    156,074.60x = 233,715.90 × 85,874.60
  4. Step 4: Simplify right side
    156,074.60x = 20,070,259,426.14
  5. Step 5: Solve for x
    x = 20,070,259,426.14/156,074.60
  6. Step 6: Final answer
    x = 128,594.01

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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.