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Finding the Fourth Proportional to 98,406.99, 135,802.08 and 55,964.61

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Solution

The fourth proportional to 98,406.99, 135,802.08 and 55,964.61 is: 77,231.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,406.99 : 135,802.08 = 55,964.61 : x
  2. Step 2: Convert to fraction form
    98,406.99/135,802.08 = 55,964.61/x
  3. Step 3: Cross multiply
    98,406.99x = 135,802.08 × 55,964.61
  4. Step 4: Simplify right side
    98,406.99x = 7,600,110,444.39
  5. Step 5: Solve for x
    x = 7,600,110,444.39/98,406.99
  6. Step 6: Final answer
    x = 77,231.41

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Why These Related Problems?

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