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Finding the Fourth Proportional to 356,419.66, 491,859.12 and 195,280.82

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Solution

The fourth proportional to 356,419.66, 491,859.12 and 195,280.82 is: 269,487.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,419.66 : 491,859.12 = 195,280.82 : x
  2. Step 2: Convert to fraction form
    356,419.66/491,859.12 = 195,280.82/x
  3. Step 3: Cross multiply
    356,419.66x = 491,859.12 × 195,280.82
  4. Step 4: Simplify right side
    356,419.66x = 96,050,652,278.08
  5. Step 5: Solve for x
    x = 96,050,652,278.08/356,419.66
  6. Step 6: Final answer
    x = 269,487.53

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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.