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Finding the Fourth Proportional to 320,086.59, 441,765.76 and 191,030.54

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Solution

The fourth proportional to 320,086.59, 441,765.76 and 191,030.54 is: 263,649.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,086.59 : 441,765.76 = 191,030.54 : x
  2. Step 2: Convert to fraction form
    320,086.59/441,765.76 = 191,030.54/x
  3. Step 3: Cross multiply
    320,086.59x = 441,765.76 × 191,030.54
  4. Step 4: Simplify right side
    320,086.59x = 84,390,751,490.42
  5. Step 5: Solve for x
    x = 84,390,751,490.42/320,086.59
  6. Step 6: Final answer
    x = 263,649.76

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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.