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Finding the Fourth Proportional to 56,998.96, 78,658.40 and 31,848.48

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Solution

The fourth proportional to 56,998.96, 78,658.40 and 31,848.48 is: 43,950.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,998.96 : 78,658.40 = 31,848.48 : x
  2. Step 2: Convert to fraction form
    56,998.96/78,658.40 = 31,848.48/x
  3. Step 3: Cross multiply
    56,998.96x = 78,658.40 × 31,848.48
  4. Step 4: Simplify right side
    56,998.96x = 2,505,150,479.23
  5. Step 5: Solve for x
    x = 2,505,150,479.23/56,998.96
  6. Step 6: Final answer
    x = 43,950.81

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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.