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Finding the Fourth Proportional to 15,094.19, 20,815.48 and 9,043.46

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Solution

The fourth proportional to 15,094.19, 20,815.48 and 9,043.46 is: 12,471.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,094.19 : 20,815.48 = 9,043.46 : x
  2. Step 2: Convert to fraction form
    15,094.19/20,815.48 = 9,043.46/x
  3. Step 3: Cross multiply
    15,094.19x = 20,815.48 × 9,043.46
  4. Step 4: Simplify right side
    15,094.19x = 188,243,811.47
  5. Step 5: Solve for x
    x = 188,243,811.47/15,094.19
  6. Step 6: Final answer
    x = 12,471.28

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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.