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Finding the Third Proportional to 61,159.50 and 86,127

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Solution

The third proportional to 61,159.50 and 86,127 is: 121,287.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,159.50 : 86,127 = 86,127 : x
  2. Step 2: Convert to fraction form
    61,159.50/86,127 = 86,127/x
  3. Step 3: Cross multiply
    61,159.50x = 86,127 × 86,127
  4. Step 4: Simplify right side
    61,159.50x = 7,417,860,129
  5. Step 5: Solve for x
    x = 7,417,860,129/61,159.50
  6. Step 6: Final answer
    x = 121,287.13

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.