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Finding the Fourth Proportional to 52,988.82, 79,480.53 and 13,543.58

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Solution

The fourth proportional to 52,988.82, 79,480.53 and 13,543.58 is: 20,314.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,988.82 : 79,480.53 = 13,543.58 : x
  2. Step 2: Convert to fraction form
    52,988.82/79,480.53 = 13,543.58/x
  3. Step 3: Cross multiply
    52,988.82x = 79,480.53 × 13,543.58
  4. Step 4: Simplify right side
    52,988.82x = 1,076,450,519.09
  5. Step 5: Solve for x
    x = 1,076,450,519.09/52,988.82
  6. Step 6: Final answer
    x = 20,314.67

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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.