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Finding the Fourth Proportional to 66,513.66, 91,785.16 and 37,829.44

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Solution

The fourth proportional to 66,513.66, 91,785.16 and 37,829.44 is: 52,202.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,513.66 : 91,785.16 = 37,829.44 : x
  2. Step 2: Convert to fraction form
    66,513.66/91,785.16 = 37,829.44/x
  3. Step 3: Cross multiply
    66,513.66x = 91,785.16 × 37,829.44
  4. Step 4: Simplify right side
    66,513.66x = 3,472,181,203.11
  5. Step 5: Solve for x
    x = 3,472,181,203.11/66,513.66
  6. Step 6: Final answer
    x = 52,202.53

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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.