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Finding the Fourth Proportional to 62,618, 86,343.28 and 48,245.76

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Solution

The fourth proportional to 62,618, 86,343.28 and 48,245.76 is: 66,525.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,618 : 86,343.28 = 48,245.76 : x
  2. Step 2: Convert to fraction form
    62,618/86,343.28 = 48,245.76/x
  3. Step 3: Cross multiply
    62,618x = 86,343.28 × 48,245.76
  4. Step 4: Simplify right side
    62,618x = 4,165,697,164.49
  5. Step 5: Solve for x
    x = 4,165,697,164.49/62,618
  6. Step 6: Final answer
    x = 66,525.55

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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.