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Finding the Fourth Proportional to 14,465.55, 21,696.92 and 9,815.43

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Solution

The fourth proportional to 14,465.55, 21,696.92 and 9,815.43 is: 14,722.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,465.55 : 21,696.92 = 9,815.43 : x
  2. Step 2: Convert to fraction form
    14,465.55/21,696.92 = 9,815.43/x
  3. Step 3: Cross multiply
    14,465.55x = 21,696.92 × 9,815.43
  4. Step 4: Simplify right side
    14,465.55x = 212,964,550.40
  5. Step 5: Solve for x
    x = 212,964,550.40/14,465.55
  6. Step 6: Final answer
    x = 14,722.19

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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.