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Finding the Fourth Proportional to 65,569.20, 98,548.20 and 57,015.60

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Solution

The fourth proportional to 65,569.20, 98,548.20 and 57,015.60 is: 85,692.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,569.20 : 98,548.20 = 57,015.60 : x
  2. Step 2: Convert to fraction form
    65,569.20/98,548.20 = 57,015.60/x
  3. Step 3: Cross multiply
    65,569.20x = 98,548.20 × 57,015.60
  4. Step 4: Simplify right side
    65,569.20x = 5,618,784,751.92
  5. Step 5: Solve for x
    x = 5,618,784,751.92/65,569.20
  6. Step 6: Final answer
    x = 85,692.44

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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.