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Finding the Fourth Proportional to 482,087.62, 722,839.74 and 215,798.50

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Solution

The fourth proportional to 482,087.62, 722,839.74 and 215,798.50 is: 323,567.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,087.62 : 722,839.74 = 215,798.50 : x
  2. Step 2: Convert to fraction form
    482,087.62/722,839.74 = 215,798.50/x
  3. Step 3: Cross multiply
    482,087.62x = 722,839.74 × 215,798.50
  4. Step 4: Simplify right side
    482,087.62x = 155,987,731,632.39
  5. Step 5: Solve for x
    x = 155,987,731,632.39/482,087.62
  6. Step 6: Final answer
    x = 323,567.18

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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.