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Finding the Fourth Proportional to 71,975.86, 99,275.26 and 62,398.62

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Solution

The fourth proportional to 71,975.86, 99,275.26 and 62,398.62 is: 86,065.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,975.86 : 99,275.26 = 62,398.62 : x
  2. Step 2: Convert to fraction form
    71,975.86/99,275.26 = 62,398.62/x
  3. Step 3: Cross multiply
    71,975.86x = 99,275.26 × 62,398.62
  4. Step 4: Simplify right side
    71,975.86x = 6,194,639,224.14
  5. Step 5: Solve for x
    x = 6,194,639,224.14/71,975.86
  6. Step 6: Final answer
    x = 86,065.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.