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Finding the Fourth Proportional to 18,588.10, 25,639.88 and 11,029.06

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Solution

The fourth proportional to 18,588.10, 25,639.88 and 11,029.06 is: 15,213.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,588.10 : 25,639.88 = 11,029.06 : x
  2. Step 2: Convert to fraction form
    18,588.10/25,639.88 = 11,029.06/x
  3. Step 3: Cross multiply
    18,588.10x = 25,639.88 × 11,029.06
  4. Step 4: Simplify right side
    18,588.10x = 282,783,751.82
  5. Step 5: Solve for x
    x = 282,783,751.82/18,588.10
  6. Step 6: Final answer
    x = 15,213.16

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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.