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Finding the Fourth Proportional to 14,238.76, 19,649.88 and 7,951.54

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Solution

The fourth proportional to 14,238.76, 19,649.88 and 7,951.54 is: 10,973.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,238.76 : 19,649.88 = 7,951.54 : x
  2. Step 2: Convert to fraction form
    14,238.76/19,649.88 = 7,951.54/x
  3. Step 3: Cross multiply
    14,238.76x = 19,649.88 × 7,951.54
  4. Step 4: Simplify right side
    14,238.76x = 156,246,806.82
  5. Step 5: Solve for x
    x = 156,246,806.82/14,238.76
  6. Step 6: Final answer
    x = 10,973.34

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Half scale
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Double scale
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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.