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Finding the Fourth Proportional to 70,915.62, 97,861.63 and 39,084.51

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Solution

The fourth proportional to 70,915.62, 97,861.63 and 39,084.51 is: 53,935.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,915.62 : 97,861.63 = 39,084.51 : x
  2. Step 2: Convert to fraction form
    70,915.62/97,861.63 = 39,084.51/x
  3. Step 3: Cross multiply
    70,915.62x = 97,861.63 × 39,084.51
  4. Step 4: Simplify right side
    70,915.62x = 3,824,873,856.35
  5. Step 5: Solve for x
    x = 3,824,873,856.35/70,915.62
  6. Step 6: Final answer
    x = 53,935.56

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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.