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Finding the Fourth Proportional to 65,244.82, 90,016.80 and 38,393.93

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Solution

The fourth proportional to 65,244.82, 90,016.80 and 38,393.93 is: 52,971.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,244.82 : 90,016.80 = 38,393.93 : x
  2. Step 2: Convert to fraction form
    65,244.82/90,016.80 = 38,393.93/x
  3. Step 3: Cross multiply
    65,244.82x = 90,016.80 × 38,393.93
  4. Step 4: Simplify right side
    65,244.82x = 3,456,098,267.94
  5. Step 5: Solve for x
    x = 3,456,098,267.94/65,244.82
  6. Step 6: Final answer
    x = 52,971.23

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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.