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Finding the Fourth Proportional to 86,673.90, 121,605.90 and 86,673.90

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Solution

The fourth proportional to 86,673.90, 121,605.90 and 86,673.90 is: 121,605.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,673.90 : 121,605.90 = 86,673.90 : x
  2. Step 2: Convert to fraction form
    86,673.90/121,605.90 = 86,673.90/x
  3. Step 3: Cross multiply
    86,673.90x = 121,605.90 × 86,673.90
  4. Step 4: Simplify right side
    86,673.90x = 10,540,057,616.01
  5. Step 5: Solve for x
    x = 10,540,057,616.01/86,673.90
  6. Step 6: Final answer
    x = 121,605.90

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These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.