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Finding the Fourth Proportional to 48,881.20, 68,618 and 48,881.20

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Solution

The fourth proportional to 48,881.20, 68,618 and 48,881.20 is: 68,618

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,881.20 : 68,618 = 48,881.20 : x
  2. Step 2: Convert to fraction form
    48,881.20/68,618 = 48,881.20/x
  3. Step 3: Cross multiply
    48,881.20x = 68,618 × 48,881.20
  4. Step 4: Simplify right side
    48,881.20x = 3,354,130,181.60
  5. Step 5: Solve for x
    x = 3,354,130,181.60/48,881.20
  6. Step 6: Final answer
    x = 68,618

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.