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Finding the Fourth Proportional to 14,501.16, 20,018.34 and 10,917.54

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Solution

The fourth proportional to 14,501.16, 20,018.34 and 10,917.54 is: 15,071.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,501.16 : 20,018.34 = 10,917.54 : x
  2. Step 2: Convert to fraction form
    14,501.16/20,018.34 = 10,917.54/x
  3. Step 3: Cross multiply
    14,501.16x = 20,018.34 × 10,917.54
  4. Step 4: Simplify right side
    14,501.16x = 218,551,027.68
  5. Step 5: Solve for x
    x = 218,551,027.68/14,501.16
  6. Step 6: Final answer
    x = 15,071.28

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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.