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Finding the Fourth Proportional to 439,155.44, 605,700.06 and 378,005.66

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Solution

The fourth proportional to 439,155.44, 605,700.06 and 378,005.66 is: 521,359.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,155.44 : 605,700.06 = 378,005.66 : x
  2. Step 2: Convert to fraction form
    439,155.44/605,700.06 = 378,005.66/x
  3. Step 3: Cross multiply
    439,155.44x = 605,700.06 × 378,005.66
  4. Step 4: Simplify right side
    439,155.44x = 228,958,050,942.34
  5. Step 5: Solve for x
    x = 228,958,050,942.34/439,155.44
  6. Step 6: Final answer
    x = 521,359.93

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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.