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Finding the Fourth Proportional to 257,958.68, 356,005.33 and 143,259.44

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Solution

The fourth proportional to 257,958.68, 356,005.33 and 143,259.44 is: 197,710.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,958.68 : 356,005.33 = 143,259.44 : x
  2. Step 2: Convert to fraction form
    257,958.68/356,005.33 = 143,259.44/x
  3. Step 3: Cross multiply
    257,958.68x = 356,005.33 × 143,259.44
  4. Step 4: Simplify right side
    257,958.68x = 51,001,122,074.64
  5. Step 5: Solve for x
    x = 51,001,122,074.64/257,958.68
  6. Step 6: Final answer
    x = 197,710.44

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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.