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Finding the Fourth Proportional to 68,935.35, 103,490.51 and 58,612.71

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Solution

The fourth proportional to 68,935.35, 103,490.51 and 58,612.71 is: 87,993.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,935.35 : 103,490.51 = 58,612.71 : x
  2. Step 2: Convert to fraction form
    68,935.35/103,490.51 = 58,612.71/x
  3. Step 3: Cross multiply
    68,935.35x = 103,490.51 × 58,612.71
  4. Step 4: Simplify right side
    68,935.35x = 6,065,859,675.10
  5. Step 5: Solve for x
    x = 6,065,859,675.10/68,935.35
  6. Step 6: Final answer
    x = 87,993.45

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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.