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Finding the Fourth Proportional to 51,053.58, 76,584.02 and 13,613.45

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Solution

The fourth proportional to 51,053.58, 76,584.02 and 13,613.45 is: 20,421.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,053.58 : 76,584.02 = 13,613.45 : x
  2. Step 2: Convert to fraction form
    51,053.58/76,584.02 = 13,613.45/x
  3. Step 3: Cross multiply
    51,053.58x = 76,584.02 × 13,613.45
  4. Step 4: Simplify right side
    51,053.58x = 1,042,572,276.08
  5. Step 5: Solve for x
    x = 1,042,572,276.08/51,053.58
  6. Step 6: Final answer
    x = 20,421.14

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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.