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Finding the Fourth Proportional to 21,749.71, 32,624.75 and 8,602.08

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Solution

The fourth proportional to 21,749.71, 32,624.75 and 8,602.08 is: 12,903.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,749.71 : 32,624.75 = 8,602.08 : x
  2. Step 2: Convert to fraction form
    21,749.71/32,624.75 = 8,602.08/x
  3. Step 3: Cross multiply
    21,749.71x = 32,624.75 × 8,602.08
  4. Step 4: Simplify right side
    21,749.71x = 280,640,592.51
  5. Step 5: Solve for x
    x = 280,640,592.51/21,749.71
  6. Step 6: Final answer
    x = 12,903.19

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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.