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Finding the Fourth Proportional to 18,538.76, 25,583.90 and 10,580.82

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Solution

The fourth proportional to 18,538.76, 25,583.90 and 10,580.82 is: 14,601.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538.76 : 25,583.90 = 10,580.82 : x
  2. Step 2: Convert to fraction form
    18,538.76/25,583.90 = 10,580.82/x
  3. Step 3: Cross multiply
    18,538.76x = 25,583.90 × 10,580.82
  4. Step 4: Simplify right side
    18,538.76x = 270,698,587.89
  5. Step 5: Solve for x
    x = 270,698,587.89/18,538.76
  6. Step 6: Final answer
    x = 14,601.77

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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.