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Finding the Fourth Proportional to 186,859.31, 280,122.30 and 68,503.05

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Solution

The fourth proportional to 186,859.31, 280,122.30 and 68,503.05 is: 102,693.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,859.31 : 280,122.30 = 68,503.05 : x
  2. Step 2: Convert to fraction form
    186,859.31/280,122.30 = 68,503.05/x
  3. Step 3: Cross multiply
    186,859.31x = 280,122.30 × 68,503.05
  4. Step 4: Simplify right side
    186,859.31x = 19,189,231,923.02
  5. Step 5: Solve for x
    x = 19,189,231,923.02/186,859.31
  6. Step 6: Final answer
    x = 102,693.48

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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.