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Finding the Fourth Proportional to 13,236.16, 19,847.95 and 7,691.10

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Solution

The fourth proportional to 13,236.16, 19,847.95 and 7,691.10 is: 11,533.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236.16 : 19,847.95 = 7,691.10 : x
  2. Step 2: Convert to fraction form
    13,236.16/19,847.95 = 7,691.10/x
  3. Step 3: Cross multiply
    13,236.16x = 19,847.95 × 7,691.10
  4. Step 4: Simplify right side
    13,236.16x = 152,652,568.25
  5. Step 5: Solve for x
    x = 152,652,568.25/13,236.16
  6. Step 6: Final answer
    x = 11,533.00

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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.