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Finding the Fourth Proportional to 52,681.74, 79,022.67 and 21,516.99

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Solution

The fourth proportional to 52,681.74, 79,022.67 and 21,516.99 is: 32,275.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,681.74 : 79,022.67 = 21,516.99 : x
  2. Step 2: Convert to fraction form
    52,681.74/79,022.67 = 21,516.99/x
  3. Step 3: Cross multiply
    52,681.74x = 79,022.67 × 21,516.99
  4. Step 4: Simplify right side
    52,681.74x = 1,700,330,000.16
  5. Step 5: Solve for x
    x = 1,700,330,000.16/52,681.74
  6. Step 6: Final answer
    x = 32,275.51

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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.