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Finding the Fourth Proportional to 98,368.94, 135,744.32 and 55,926.56

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Solution

The fourth proportional to 98,368.94, 135,744.32 and 55,926.56 is: 77,175.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,368.94 : 135,744.32 = 55,926.56 : x
  2. Step 2: Convert to fraction form
    98,368.94/135,744.32 = 55,926.56/x
  3. Step 3: Cross multiply
    98,368.94x = 135,744.32 × 55,926.56
  4. Step 4: Simplify right side
    98,368.94x = 7,591,712,857.14
  5. Step 5: Solve for x
    x = 7,591,712,857.14/98,368.94
  6. Step 6: Final answer
    x = 77,175.91

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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.