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Finding the Fourth Proportional to 59,900.90, 82,689.81 and 38,690.51

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Solution

The fourth proportional to 59,900.90, 82,689.81 and 38,690.51 is: 53,410.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,900.90 : 82,689.81 = 38,690.51 : x
  2. Step 2: Convert to fraction form
    59,900.90/82,689.81 = 38,690.51/x
  3. Step 3: Cross multiply
    59,900.90x = 82,689.81 × 38,690.51
  4. Step 4: Simplify right side
    59,900.90x = 3,199,310,920.70
  5. Step 5: Solve for x
    x = 3,199,310,920.70/59,900.90
  6. Step 6: Final answer
    x = 53,410.06

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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.