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Finding the Fourth Proportional to 21,904.29, 32,866.81 and 11,368.69

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Solution

The fourth proportional to 21,904.29, 32,866.81 and 11,368.69 is: 17,058.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,904.29 : 32,866.81 = 11,368.69 : x
  2. Step 2: Convert to fraction form
    21,904.29/32,866.81 = 11,368.69/x
  3. Step 3: Cross multiply
    21,904.29x = 32,866.81 × 11,368.69
  4. Step 4: Simplify right side
    21,904.29x = 373,652,463.59
  5. Step 5: Solve for x
    x = 373,652,463.59/21,904.29
  6. Step 6: Final answer
    x = 17,058.41

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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.