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Finding the Fourth Proportional to 14,129.50, 21,203.97 and 4,895.50

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Solution

The fourth proportional to 14,129.50, 21,203.97 and 4,895.50 is: 7,346.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,129.50 : 21,203.97 = 4,895.50 : x
  2. Step 2: Convert to fraction form
    14,129.50/21,203.97 = 4,895.50/x
  3. Step 3: Cross multiply
    14,129.50x = 21,203.97 × 4,895.50
  4. Step 4: Simplify right side
    14,129.50x = 103,804,035.14
  5. Step 5: Solve for x
    x = 103,804,035.14/14,129.50
  6. Step 6: Final answer
    x = 7,346.62

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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.