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Finding the Fourth Proportional to 68,710.86, 94,823.70 and 38,496.42

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Solution

The fourth proportional to 68,710.86, 94,823.70 and 38,496.42 is: 53,126.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,710.86 : 94,823.70 = 38,496.42 : x
  2. Step 2: Convert to fraction form
    68,710.86/94,823.70 = 38,496.42/x
  3. Step 3: Cross multiply
    68,710.86x = 94,823.70 × 38,496.42
  4. Step 4: Simplify right side
    68,710.86x = 3,650,372,981.15
  5. Step 5: Solve for x
    x = 3,650,372,981.15/68,710.86
  6. Step 6: Final answer
    x = 53,126.58

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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.