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Finding the Fourth Proportional to 13,507.46, 18,617.99 and 9,029.58

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Solution

The fourth proportional to 13,507.46, 18,617.99 and 9,029.58 is: 12,445.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507.46 : 18,617.99 = 9,029.58 : x
  2. Step 2: Convert to fraction form
    13,507.46/18,617.99 = 9,029.58/x
  3. Step 3: Cross multiply
    13,507.46x = 18,617.99 × 9,029.58
  4. Step 4: Simplify right side
    13,507.46x = 168,112,652.72
  5. Step 5: Solve for x
    x = 168,112,652.72/13,507.46
  6. Step 6: Final answer
    x = 12,445.91

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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.