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Finding the Fourth Proportional to 108,785.25, 150,123.69 and 66,352.59

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Solution

The fourth proportional to 108,785.25, 150,123.69 and 66,352.59 is: 91,566.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,785.25 : 150,123.69 = 66,352.59 : x
  2. Step 2: Convert to fraction form
    108,785.25/150,123.69 = 66,352.59/x
  3. Step 3: Cross multiply
    108,785.25x = 150,123.69 × 66,352.59
  4. Step 4: Simplify right side
    108,785.25x = 9,961,095,651.86
  5. Step 5: Solve for x
    x = 9,961,095,651.86/108,785.25
  6. Step 6: Final answer
    x = 91,566.60

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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.