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Finding the Fourth Proportional to 68,575.76, 94,643.64 and 38,372.68

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Solution

The fourth proportional to 68,575.76, 94,643.64 and 38,372.68 is: 52,959.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,575.76 : 94,643.64 = 38,372.68 : x
  2. Step 2: Convert to fraction form
    68,575.76/94,643.64 = 38,372.68/x
  3. Step 3: Cross multiply
    68,575.76x = 94,643.64 × 38,372.68
  4. Step 4: Simplify right side
    68,575.76x = 3,631,730,111.76
  5. Step 5: Solve for x
    x = 3,631,730,111.76/68,575.76
  6. Step 6: Final answer
    x = 52,959.39

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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.