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Finding the Fourth Proportional to 35,874.72, 53,807.76 and 20,890.26

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Solution

The fourth proportional to 35,874.72, 53,807.76 and 20,890.26 is: 31,332.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,874.72 : 53,807.76 = 20,890.26 : x
  2. Step 2: Convert to fraction form
    35,874.72/53,807.76 = 20,890.26/x
  3. Step 3: Cross multiply
    35,874.72x = 53,807.76 × 20,890.26
  4. Step 4: Simplify right side
    35,874.72x = 1,124,058,096.42
  5. Step 5: Solve for x
    x = 1,124,058,096.42/35,874.72
  6. Step 6: Final answer
    x = 31,332.87

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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.