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Finding the Fourth Proportional to 79,586.32, 109,829.64 and 43,775.42

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Solution

The fourth proportional to 79,586.32, 109,829.64 and 43,775.42 is: 60,410.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,586.32 : 109,829.64 = 43,775.42 : x
  2. Step 2: Convert to fraction form
    79,586.32/109,829.64 = 43,775.42/x
  3. Step 3: Cross multiply
    79,586.32x = 109,829.64 × 43,775.42
  4. Step 4: Simplify right side
    79,586.32x = 4,807,838,619.45
  5. Step 5: Solve for x
    x = 4,807,838,619.45/79,586.32
  6. Step 6: Final answer
    x = 60,410.36

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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.