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Finding the Fourth Proportional to 13,475.66, 18,595.28 and 7,508.74

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Solution

The fourth proportional to 13,475.66, 18,595.28 and 7,508.74 is: 10,361.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,475.66 : 18,595.28 = 7,508.74 : x
  2. Step 2: Convert to fraction form
    13,475.66/18,595.28 = 7,508.74/x
  3. Step 3: Cross multiply
    13,475.66x = 18,595.28 × 7,508.74
  4. Step 4: Simplify right side
    13,475.66x = 139,627,122.75
  5. Step 5: Solve for x
    x = 139,627,122.75/13,475.66
  6. Step 6: Final answer
    x = 10,361.43

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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.