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Finding the Fourth Proportional to 62,820.66, 86,663.60 and 38,599.64

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Solution

The fourth proportional to 62,820.66, 86,663.60 and 38,599.64 is: 53,249.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,820.66 : 86,663.60 = 38,599.64 : x
  2. Step 2: Convert to fraction form
    62,820.66/86,663.60 = 38,599.64/x
  3. Step 3: Cross multiply
    62,820.66x = 86,663.60 × 38,599.64
  4. Step 4: Simplify right side
    62,820.66x = 3,345,183,761.10
  5. Step 5: Solve for x
    x = 3,345,183,761.10/62,820.66
  6. Step 6: Final answer
    x = 53,249.74

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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.