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Finding the Fourth Proportional to 19,502.76, 26,910.79 and 11,004.21

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Solution

The fourth proportional to 19,502.76, 26,910.79 and 11,004.21 is: 15,184.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,502.76 : 26,910.79 = 11,004.21 : x
  2. Step 2: Convert to fraction form
    19,502.76/26,910.79 = 11,004.21/x
  3. Step 3: Cross multiply
    19,502.76x = 26,910.79 × 11,004.21
  4. Step 4: Simplify right side
    19,502.76x = 296,131,984.43
  5. Step 5: Solve for x
    x = 296,131,984.43/19,502.76
  6. Step 6: Final answer
    x = 15,184.11

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Half scale
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Double scale
Find fourth proportional to 19,503.76, 26,912.17 and 11,005.21
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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.