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Finding the Fourth Proportional to 70,681.88, 97,538.82 and 38,850.68

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Solution

The fourth proportional to 70,681.88, 97,538.82 and 38,850.68 is: 53,612.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,681.88 : 97,538.82 = 38,850.68 : x
  2. Step 2: Convert to fraction form
    70,681.88/97,538.82 = 38,850.68/x
  3. Step 3: Cross multiply
    70,681.88x = 97,538.82 × 38,850.68
  4. Step 4: Simplify right side
    70,681.88x = 3,789,449,483.40
  5. Step 5: Solve for x
    x = 3,789,449,483.40/70,681.88
  6. Step 6: Final answer
    x = 53,612.74

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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.