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Finding the Fourth Proportional to 65,755.64, 90,671.44 and 41,851.76

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Solution

The fourth proportional to 65,755.64, 90,671.44 and 41,851.76 is: 57,710.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,755.64 : 90,671.44 = 41,851.76 : x
  2. Step 2: Convert to fraction form
    65,755.64/90,671.44 = 41,851.76/x
  3. Step 3: Cross multiply
    65,755.64x = 90,671.44 × 41,851.76
  4. Step 4: Simplify right side
    65,755.64x = 3,794,759,345.73
  5. Step 5: Solve for x
    x = 3,794,759,345.73/65,755.64
  6. Step 6: Final answer
    x = 57,710.02

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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.