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Finding the Fourth Proportional to 15,662.70, 23,487.10 and 11,261.76

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Solution

The fourth proportional to 15,662.70, 23,487.10 and 11,261.76 is: 16,887.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,662.70 : 23,487.10 = 11,261.76 : x
  2. Step 2: Convert to fraction form
    15,662.70/23,487.10 = 11,261.76/x
  3. Step 3: Cross multiply
    15,662.70x = 23,487.10 × 11,261.76
  4. Step 4: Simplify right side
    15,662.70x = 264,506,083.30
  5. Step 5: Solve for x
    x = 264,506,083.30/15,662.70
  6. Step 6: Final answer
    x = 16,887.64

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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.