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Finding the Fourth Proportional to 15,189.80, 22,784.70 and 15,092.60

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Solution

The fourth proportional to 15,189.80, 22,784.70 and 15,092.60 is: 22,638.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.80 : 22,784.70 = 15,092.60 : x
  2. Step 2: Convert to fraction form
    15,189.80/22,784.70 = 15,092.60/x
  3. Step 3: Cross multiply
    15,189.80x = 22,784.70 × 15,092.60
  4. Step 4: Simplify right side
    15,189.80x = 343,880,363.22
  5. Step 5: Solve for x
    x = 343,880,363.22/15,189.80
  6. Step 6: Final answer
    x = 22,638.90

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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.