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Finding the Fourth Proportional to 378,099.60, 521,757.77 and 234,856.77

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Solution

The fourth proportional to 378,099.60, 521,757.77 and 234,856.77 is: 324,090.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,099.60 : 521,757.77 = 234,856.77 : x
  2. Step 2: Convert to fraction form
    378,099.60/521,757.77 = 234,856.77/x
  3. Step 3: Cross multiply
    378,099.60x = 521,757.77 × 234,856.77
  4. Step 4: Simplify right side
    378,099.60x = 122,538,343,410.32
  5. Step 5: Solve for x
    x = 122,538,343,410.32/378,099.60
  6. Step 6: Final answer
    x = 324,090.12

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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.