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Finding the Fourth Proportional to 279,394.08, 386,015.40 and 194,888.40

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Solution

The fourth proportional to 279,394.08, 386,015.40 and 194,888.40 is: 269,260.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,394.08 : 386,015.40 = 194,888.40 : x
  2. Step 2: Convert to fraction form
    279,394.08/386,015.40 = 194,888.40/x
  3. Step 3: Cross multiply
    279,394.08x = 386,015.40 × 194,888.40
  4. Step 4: Simplify right side
    279,394.08x = 75,229,923,681.36
  5. Step 5: Solve for x
    x = 75,229,923,681.36/279,394.08
  6. Step 6: Final answer
    x = 269,260.98

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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.