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Finding the Fourth Proportional to 18,407.52, 27,606.65 and 5,259.96

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Solution

The fourth proportional to 18,407.52, 27,606.65 and 5,259.96 is: 7,888.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,407.52 : 27,606.65 = 5,259.96 : x
  2. Step 2: Convert to fraction form
    18,407.52/27,606.65 = 5,259.96/x
  3. Step 3: Cross multiply
    18,407.52x = 27,606.65 × 5,259.96
  4. Step 4: Simplify right side
    18,407.52x = 145,209,848.43
  5. Step 5: Solve for x
    x = 145,209,848.43/18,407.52
  6. Step 6: Final answer
    x = 7,888.62

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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.