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Finding the Third Proportional to 68,875.50 and 106,430

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Solution

The third proportional to 68,875.50 and 106,430 is: 164,461.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,875.50 : 106,430 = 106,430 : x
  2. Step 2: Convert to fraction form
    68,875.50/106,430 = 106,430/x
  3. Step 3: Cross multiply
    68,875.50x = 106,430 × 106,430
  4. Step 4: Simplify right side
    68,875.50x = 11,327,344,900
  5. Step 5: Solve for x
    x = 11,327,344,900/68,875.50
  6. Step 6: Final answer
    x = 164,461.16

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.