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Finding the Fourth Proportional to 85,563.36, 128,241.36 and 60,611.04

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Solution

The fourth proportional to 85,563.36, 128,241.36 and 60,611.04 is: 90,843.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,563.36 : 128,241.36 = 60,611.04 : x
  2. Step 2: Convert to fraction form
    85,563.36/128,241.36 = 60,611.04/x
  3. Step 3: Cross multiply
    85,563.36x = 128,241.36 × 60,611.04
  4. Step 4: Simplify right side
    85,563.36x = 7,772,842,200.61
  5. Step 5: Solve for x
    x = 7,772,842,200.61/85,563.36
  6. Step 6: Final answer
    x = 90,843.12

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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.