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Finding the Fourth Proportional to 38,018.43, 52,463.71 and 21,885.06

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Solution

The fourth proportional to 38,018.43, 52,463.71 and 21,885.06 is: 30,200.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,018.43 : 52,463.71 = 21,885.06 : x
  2. Step 2: Convert to fraction form
    38,018.43/52,463.71 = 21,885.06/x
  3. Step 3: Cross multiply
    38,018.43x = 52,463.71 × 21,885.06
  4. Step 4: Simplify right side
    38,018.43x = 1,148,171,271.79
  5. Step 5: Solve for x
    x = 1,148,171,271.79/38,018.43
  6. Step 6: Final answer
    x = 30,200.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.