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Finding the Fourth Proportional to 52,975.99, 79,390.09 and 39,812.95

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Solution

The fourth proportional to 52,975.99, 79,390.09 and 39,812.95 is: 59,663.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,975.99 : 79,390.09 = 39,812.95 : x
  2. Step 2: Convert to fraction form
    52,975.99/79,390.09 = 39,812.95/x
  3. Step 3: Cross multiply
    52,975.99x = 79,390.09 × 39,812.95
  4. Step 4: Simplify right side
    52,975.99x = 3,160,753,683.67
  5. Step 5: Solve for x
    x = 3,160,753,683.67/52,975.99
  6. Step 6: Final answer
    x = 59,663.89

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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.