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Finding the Fourth Proportional to 15,056.50, 20,777.97 and 9,168.50

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Solution

The fourth proportional to 15,056.50, 20,777.97 and 9,168.50 is: 12,652.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,056.50 : 20,777.97 = 9,168.50 : x
  2. Step 2: Convert to fraction form
    15,056.50/20,777.97 = 9,168.50/x
  3. Step 3: Cross multiply
    15,056.50x = 20,777.97 × 9,168.50
  4. Step 4: Simplify right side
    15,056.50x = 190,502,817.95
  5. Step 5: Solve for x
    x = 190,502,817.95/15,056.50
  6. Step 6: Final answer
    x = 12,652.53

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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.