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Finding the Fourth Proportional to 58,689.36, 87,990.26 and 35,310.32

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Solution

The fourth proportional to 58,689.36, 87,990.26 and 35,310.32 is: 52,939.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,689.36 : 87,990.26 = 35,310.32 : x
  2. Step 2: Convert to fraction form
    58,689.36/87,990.26 = 35,310.32/x
  3. Step 3: Cross multiply
    58,689.36x = 87,990.26 × 35,310.32
  4. Step 4: Simplify right side
    58,689.36x = 3,106,964,237.48
  5. Step 5: Solve for x
    x = 3,106,964,237.48/58,689.36
  6. Step 6: Final answer
    x = 52,939.14

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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.