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Finding the Fourth Proportional to 39,903.27, 59,836.53 and 11,813.28

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Solution

The fourth proportional to 39,903.27, 59,836.53 and 11,813.28 is: 17,714.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,903.27 : 59,836.53 = 11,813.28 : x
  2. Step 2: Convert to fraction form
    39,903.27/59,836.53 = 11,813.28/x
  3. Step 3: Cross multiply
    39,903.27x = 59,836.53 × 11,813.28
  4. Step 4: Simplify right side
    39,903.27x = 706,865,683.12
  5. Step 5: Solve for x
    x = 706,865,683.12/39,903.27
  6. Step 6: Final answer
    x = 17,714.48

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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.