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Finding the Third Proportional to 857,711 and 1,261,618

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Solution

The third proportional to 857,711 and 1,261,618 is: 1,855,729.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,711 : 1,261,618 = 1,261,618 : x
  2. Step 2: Convert to fraction form
    857,711/1,261,618 = 1,261,618/x
  3. Step 3: Cross multiply
    857,711x = 1,261,618 × 1,261,618
  4. Step 4: Simplify right side
    857,711x = 1,591,679,977,924
  5. Step 5: Solve for x
    x = 1,591,679,977,924/857,711
  6. Step 6: Final answer
    x = 1,855,729.93

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.