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Finding the Fourth Proportional to 14,447.16, 21,669.93 and 5,087.61

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Solution

The fourth proportional to 14,447.16, 21,669.93 and 5,087.61 is: 7,631.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,447.16 : 21,669.93 = 5,087.61 : x
  2. Step 2: Convert to fraction form
    14,447.16/21,669.93 = 5,087.61/x
  3. Step 3: Cross multiply
    14,447.16x = 21,669.93 × 5,087.61
  4. Step 4: Simplify right side
    14,447.16x = 110,248,152.57
  5. Step 5: Solve for x
    x = 110,248,152.57/14,447.16
  6. Step 6: Final answer
    x = 7,631.13

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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.