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Finding the Fourth Proportional to 13,586.01, 18,749.22 and 7,617.81

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Solution

The fourth proportional to 13,586.01, 18,749.22 and 7,617.81 is: 10,512.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.01 : 18,749.22 = 7,617.81 : x
  2. Step 2: Convert to fraction form
    13,586.01/18,749.22 = 7,617.81/x
  3. Step 3: Cross multiply
    13,586.01x = 18,749.22 × 7,617.81
  4. Step 4: Simplify right side
    13,586.01x = 142,827,995.61
  5. Step 5: Solve for x
    x = 142,827,995.61/13,586.01
  6. Step 6: Final answer
    x = 10,512.87

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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.