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Finding the Fourth Proportional to 35,872.47, 53,813.03 and 11,857.59

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Solution

The fourth proportional to 35,872.47, 53,813.03 and 11,857.59 is: 17,787.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,872.47 : 53,813.03 = 11,857.59 : x
  2. Step 2: Convert to fraction form
    35,872.47/53,813.03 = 11,857.59/x
  3. Step 3: Cross multiply
    35,872.47x = 53,813.03 × 11,857.59
  4. Step 4: Simplify right side
    35,872.47x = 638,092,787.11
  5. Step 5: Solve for x
    x = 638,092,787.11/35,872.47
  6. Step 6: Final answer
    x = 17,787.81

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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.