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Finding the Fourth Proportional to 56,678.78, 84,955.78 and 23,380.62

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Solution

The fourth proportional to 56,678.78, 84,955.78 and 23,380.62 is: 35,045.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,678.78 : 84,955.78 = 23,380.62 : x
  2. Step 2: Convert to fraction form
    56,678.78/84,955.78 = 23,380.62/x
  3. Step 3: Cross multiply
    56,678.78x = 84,955.78 × 23,380.62
  4. Step 4: Simplify right side
    56,678.78x = 1,986,318,808.98
  5. Step 5: Solve for x
    x = 1,986,318,808.98/56,678.78
  6. Step 6: Final answer
    x = 35,045.19

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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.