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Finding the Fourth Proportional to 86,097.90, 129,110.40 and 26,917.68

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Solution

The fourth proportional to 86,097.90, 129,110.40 and 26,917.68 is: 40,365.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,097.90 : 129,110.40 = 26,917.68 : x
  2. Step 2: Convert to fraction form
    86,097.90/129,110.40 = 26,917.68/x
  3. Step 3: Cross multiply
    86,097.90x = 129,110.40 × 26,917.68
  4. Step 4: Simplify right side
    86,097.90x = 3,475,352,431.87
  5. Step 5: Solve for x
    x = 3,475,352,431.87/86,097.90
  6. Step 6: Final answer
    x = 40,365.12

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1.5x scale

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.