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Finding the Fourth Proportional to 14,888.76, 20,546.88 and 8,174.82

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Solution

The fourth proportional to 14,888.76, 20,546.88 and 8,174.82 is: 11,281.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,888.76 : 20,546.88 = 8,174.82 : x
  2. Step 2: Convert to fraction form
    14,888.76/20,546.88 = 8,174.82/x
  3. Step 3: Cross multiply
    14,888.76x = 20,546.88 × 8,174.82
  4. Step 4: Simplify right side
    14,888.76x = 167,967,045.56
  5. Step 5: Solve for x
    x = 167,967,045.56/14,888.76
  6. Step 6: Final answer
    x = 11,281.47

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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.