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Finding the Third Proportional to 85,655 and 130,506

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Solution

The third proportional to 85,655 and 130,506 is: 198,842.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,655 : 130,506 = 130,506 : x
  2. Step 2: Convert to fraction form
    85,655/130,506 = 130,506/x
  3. Step 3: Cross multiply
    85,655x = 130,506 × 130,506
  4. Step 4: Simplify right side
    85,655x = 17,031,816,036
  5. Step 5: Solve for x
    x = 17,031,816,036/85,655
  6. Step 6: Final answer
    x = 198,842.05

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.