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Finding the Fourth Proportional to 11,415.68, 17,123.53 and 7,491.77

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Solution

The fourth proportional to 11,415.68, 17,123.53 and 7,491.77 is: 11,237.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415.68 : 17,123.53 = 7,491.77 : x
  2. Step 2: Convert to fraction form
    11,415.68/17,123.53 = 7,491.77/x
  3. Step 3: Cross multiply
    11,415.68x = 17,123.53 × 7,491.77
  4. Step 4: Simplify right side
    11,415.68x = 128,285,548.35
  5. Step 5: Solve for x
    x = 128,285,548.35/11,415.68
  6. Step 6: Final answer
    x = 11,237.66

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Similar ratio
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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.