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Finding the Fourth Proportional to 13,256.62, 19,867.29 and 7,015.30

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Solution

The fourth proportional to 13,256.62, 19,867.29 and 7,015.30 is: 10,513.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,256.62 : 19,867.29 = 7,015.30 : x
  2. Step 2: Convert to fraction form
    13,256.62/19,867.29 = 7,015.30/x
  3. Step 3: Cross multiply
    13,256.62x = 19,867.29 × 7,015.30
  4. Step 4: Simplify right side
    13,256.62x = 139,374,999.54
  5. Step 5: Solve for x
    x = 139,374,999.54/13,256.62
  6. Step 6: Final answer
    x = 10,513.62

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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.