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Finding the Fourth Proportional to 99,251.79, 136,974.41 and 56,230.93

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Solution

The fourth proportional to 99,251.79, 136,974.41 and 56,230.93 is: 77,602.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,251.79 : 136,974.41 = 56,230.93 : x
  2. Step 2: Convert to fraction form
    99,251.79/136,974.41 = 56,230.93/x
  3. Step 3: Cross multiply
    99,251.79x = 136,974.41 × 56,230.93
  4. Step 4: Simplify right side
    99,251.79x = 7,702,198,460.50
  5. Step 5: Solve for x
    x = 7,702,198,460.50/99,251.79
  6. Step 6: Final answer
    x = 77,602.62

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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.