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Finding the Fourth Proportional to 386,888.04, 580,067.33 and 196,980.90

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Solution

The fourth proportional to 386,888.04, 580,067.33 and 196,980.90 is: 295,336.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,888.04 : 580,067.33 = 196,980.90 : x
  2. Step 2: Convert to fraction form
    386,888.04/580,067.33 = 196,980.90/x
  3. Step 3: Cross multiply
    386,888.04x = 580,067.33 × 196,980.90
  4. Step 4: Simplify right side
    386,888.04x = 114,262,184,724.00
  5. Step 5: Solve for x
    x = 114,262,184,724.00/386,888.04
  6. Step 6: Final answer
    x = 295,336.57

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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.