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Finding the Third Proportional to 48,428 and 72,618

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Solution

The third proportional to 48,428 and 72,618 is: 108,891.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,428 : 72,618 = 72,618 : x
  2. Step 2: Convert to fraction form
    48,428/72,618 = 72,618/x
  3. Step 3: Cross multiply
    48,428x = 72,618 × 72,618
  4. Step 4: Simplify right side
    48,428x = 5,273,373,924
  5. Step 5: Solve for x
    x = 5,273,373,924/48,428
  6. Step 6: Final answer
    x = 108,891.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.