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Finding the Fourth Proportional to 79,032.87, 109,068.21 and 45,046.50

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Solution

The fourth proportional to 79,032.87, 109,068.21 and 45,046.50 is: 62,165.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,032.87 : 109,068.21 = 45,046.50 : x
  2. Step 2: Convert to fraction form
    79,032.87/109,068.21 = 45,046.50/x
  3. Step 3: Cross multiply
    79,032.87x = 109,068.21 × 45,046.50
  4. Step 4: Simplify right side
    79,032.87x = 4,913,141,121.77
  5. Step 5: Solve for x
    x = 4,913,141,121.77/79,032.87
  6. Step 6: Final answer
    x = 62,165.79

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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.