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Finding the Fourth Proportional to 321,699.15, 482,552.21 and 97,061.58

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Solution

The fourth proportional to 321,699.15, 482,552.21 and 97,061.58 is: 145,593.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,699.15 : 482,552.21 = 97,061.58 : x
  2. Step 2: Convert to fraction form
    321,699.15/482,552.21 = 97,061.58/x
  3. Step 3: Cross multiply
    321,699.15x = 482,552.21 × 97,061.58
  4. Step 4: Simplify right side
    321,699.15x = 46,837,280,177.75
  5. Step 5: Solve for x
    x = 46,837,280,177.75/321,699.15
  6. Step 6: Final answer
    x = 145,593.42

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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.