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Finding the Fourth Proportional to 52,693.74, 79,040.70 and 21,528.99

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Solution

The fourth proportional to 52,693.74, 79,040.70 and 21,528.99 is: 32,293.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,693.74 : 79,040.70 = 21,528.99 : x
  2. Step 2: Convert to fraction form
    52,693.74/79,040.70 = 21,528.99/x
  3. Step 3: Cross multiply
    52,693.74x = 79,040.70 × 21,528.99
  4. Step 4: Simplify right side
    52,693.74x = 1,701,666,439.89
  5. Step 5: Solve for x
    x = 1,701,666,439.89/52,693.74
  6. Step 6: Final answer
    x = 32,293.52

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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.