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Finding the Fourth Proportional to 70,927.74, 97,878.91 and 38,662.64

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Solution

The fourth proportional to 70,927.74, 97,878.91 and 38,662.64 is: 53,353.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,927.74 : 97,878.91 = 38,662.64 : x
  2. Step 2: Convert to fraction form
    70,927.74/97,878.91 = 38,662.64/x
  3. Step 3: Cross multiply
    70,927.74x = 97,878.91 × 38,662.64
  4. Step 4: Simplify right side
    70,927.74x = 3,784,257,060.92
  5. Step 5: Solve for x
    x = 3,784,257,060.92/70,927.74
  6. Step 6: Final answer
    x = 53,353.70

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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.