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Finding the Fourth Proportional to 14,583.60, 21,891.60 and 9,043.20

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Solution

The fourth proportional to 14,583.60, 21,891.60 and 9,043.20 is: 13,574.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,583.60 : 21,891.60 = 9,043.20 : x
  2. Step 2: Convert to fraction form
    14,583.60/21,891.60 = 9,043.20/x
  3. Step 3: Cross multiply
    14,583.60x = 21,891.60 × 9,043.20
  4. Step 4: Simplify right side
    14,583.60x = 197,970,117.12
  5. Step 5: Solve for x
    x = 197,970,117.12/14,583.60
  6. Step 6: Final answer
    x = 13,574.85

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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.