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Finding the Fourth Proportional to 339,993.95, 509,987.87 and 126,754.61

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Solution

The fourth proportional to 339,993.95, 509,987.87 and 126,754.61 is: 190,130.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,993.95 : 509,987.87 = 126,754.61 : x
  2. Step 2: Convert to fraction form
    339,993.95/509,987.87 = 126,754.61/x
  3. Step 3: Cross multiply
    339,993.95x = 509,987.87 × 126,754.61
  4. Step 4: Simplify right side
    339,993.95x = 64,643,310,382.87
  5. Step 5: Solve for x
    x = 64,643,310,382.87/339,993.95
  6. Step 6: Final answer
    x = 190,130.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.