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Finding the Fourth Proportional to 257,561.00, 355,435.22 and 142,850.35

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Solution

The fourth proportional to 257,561.00, 355,435.22 and 142,850.35 is: 197,134.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,561.00 : 355,435.22 = 142,850.35 : x
  2. Step 2: Convert to fraction form
    257,561.00/355,435.22 = 142,850.35/x
  3. Step 3: Cross multiply
    257,561.00x = 355,435.22 × 142,850.35
  4. Step 4: Simplify right side
    257,561.00x = 50,774,046,380.75
  5. Step 5: Solve for x
    x = 50,774,046,380.75/257,561.00
  6. Step 6: Final answer
    x = 197,134.06

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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.