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Finding the Fourth Proportional to 65,065.56, 89,791.19 and 38,208.39

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Solution

The fourth proportional to 65,065.56, 89,791.19 and 38,208.39 is: 52,728.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,065.56 : 89,791.19 = 38,208.39 : x
  2. Step 2: Convert to fraction form
    65,065.56/89,791.19 = 38,208.39/x
  3. Step 3: Cross multiply
    65,065.56x = 89,791.19 × 38,208.39
  4. Step 4: Simplify right side
    65,065.56x = 3,430,776,806.08
  5. Step 5: Solve for x
    x = 3,430,776,806.08/65,065.56
  6. Step 6: Final answer
    x = 52,728.00

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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.