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Finding the Fourth Proportional to 58,053.68, 87,091.32 and 20,636

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Solution

The fourth proportional to 58,053.68, 87,091.32 and 20,636 is: 30,957.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,053.68 : 87,091.32 = 20,636 : x
  2. Step 2: Convert to fraction form
    58,053.68/87,091.32 = 20,636/x
  3. Step 3: Cross multiply
    58,053.68x = 87,091.32 × 20,636
  4. Step 4: Simplify right side
    58,053.68x = 1,797,216,479.52
  5. Step 5: Solve for x
    x = 1,797,216,479.52/58,053.68
  6. Step 6: Final answer
    x = 30,957.84

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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.