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Finding the Fourth Proportional to 58,694.40, 87,811.20 and 53,164.80

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Solution

The fourth proportional to 58,694.40, 87,811.20 and 53,164.80 is: 79,538.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,694.40 : 87,811.20 = 53,164.80 : x
  2. Step 2: Convert to fraction form
    58,694.40/87,811.20 = 53,164.80/x
  3. Step 3: Cross multiply
    58,694.40x = 87,811.20 × 53,164.80
  4. Step 4: Simplify right side
    58,694.40x = 4,668,464,885.76
  5. Step 5: Solve for x
    x = 4,668,464,885.76/58,694.40
  6. Step 6: Final answer
    x = 79,538.51

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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.