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Finding the Fourth Proportional to 67,315.81, 92,892.83 and 38,615.54

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Solution

The fourth proportional to 67,315.81, 92,892.83 and 38,615.54 is: 53,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,315.81 : 92,892.83 = 38,615.54 : x
  2. Step 2: Convert to fraction form
    67,315.81/92,892.83 = 38,615.54/x
  3. Step 3: Cross multiply
    67,315.81x = 92,892.83 × 38,615.54
  4. Step 4: Simplify right side
    67,315.81x = 3,587,106,135.04
  5. Step 5: Solve for x
    x = 3,587,106,135.04/67,315.81
  6. Step 6: Final answer
    x = 53,287.72

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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.