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Finding the Fourth Proportional to 12,353.76, 18,521.64 and 4,031.10

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Solution

The fourth proportional to 12,353.76, 18,521.64 and 4,031.10 is: 6,043.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,353.76 : 18,521.64 = 4,031.10 : x
  2. Step 2: Convert to fraction form
    12,353.76/18,521.64 = 4,031.10/x
  3. Step 3: Cross multiply
    12,353.76x = 18,521.64 × 4,031.10
  4. Step 4: Simplify right side
    12,353.76x = 74,662,583.00
  5. Step 5: Solve for x
    x = 74,662,583.00/12,353.76
  6. Step 6: Final answer
    x = 6,043.71

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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.