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Finding the Fourth Proportional to 279,693.90, 419,496.30 and 92,705.40

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Solution

The fourth proportional to 279,693.90, 419,496.30 and 92,705.40 is: 139,043.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,693.90 : 419,496.30 = 92,705.40 : x
  2. Step 2: Convert to fraction form
    279,693.90/419,496.30 = 92,705.40/x
  3. Step 3: Cross multiply
    279,693.90x = 419,496.30 × 92,705.40
  4. Step 4: Simplify right side
    279,693.90x = 38,889,572,290.02
  5. Step 5: Solve for x
    x = 38,889,572,290.02/279,693.90
  6. Step 6: Final answer
    x = 139,043.33

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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.