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Finding the Fourth Proportional to 57,276.90, 85,936.95 and 27,720.90

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Solution

The fourth proportional to 57,276.90, 85,936.95 and 27,720.90 is: 41,591.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,276.90 : 85,936.95 = 27,720.90 : x
  2. Step 2: Convert to fraction form
    57,276.90/85,936.95 = 27,720.90/x
  3. Step 3: Cross multiply
    57,276.90x = 85,936.95 × 27,720.90
  4. Step 4: Simplify right side
    57,276.90x = 2,382,249,597.26
  5. Step 5: Solve for x
    x = 2,382,249,597.26/57,276.90
  6. Step 6: Final answer
    x = 41,591.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.