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Finding the Fourth Proportional to 131,436.84, 197,163.48 and 89,298.84

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Solution

The fourth proportional to 131,436.84, 197,163.48 and 89,298.84 is: 133,953.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,436.84 : 197,163.48 = 89,298.84 : x
  2. Step 2: Convert to fraction form
    131,436.84/197,163.48 = 89,298.84/x
  3. Step 3: Cross multiply
    131,436.84x = 197,163.48 × 89,298.84
  4. Step 4: Simplify right side
    131,436.84x = 17,606,470,054.36
  5. Step 5: Solve for x
    x = 17,606,470,054.36/131,436.84
  6. Step 6: Final answer
    x = 133,953.84

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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.