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Finding the Fourth Proportional to 104,421.99, 143,993.39 and 61,972.32

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Solution

The fourth proportional to 104,421.99, 143,993.39 and 61,972.32 is: 85,457.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,421.99 : 143,993.39 = 61,972.32 : x
  2. Step 2: Convert to fraction form
    104,421.99/143,993.39 = 61,972.32/x
  3. Step 3: Cross multiply
    104,421.99x = 143,993.39 × 61,972.32
  4. Step 4: Simplify right side
    104,421.99x = 8,923,604,133.10
  5. Step 5: Solve for x
    x = 8,923,604,133.10/104,421.99
  6. Step 6: Final answer
    x = 85,457.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.