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Finding the Fourth Proportional to 352,860.96, 529,294.17 and 86,623.78

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Solution

The fourth proportional to 352,860.96, 529,294.17 and 86,623.78 is: 129,936.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,860.96 : 529,294.17 = 86,623.78 : x
  2. Step 2: Convert to fraction form
    352,860.96/529,294.17 = 86,623.78/x
  3. Step 3: Cross multiply
    352,860.96x = 529,294.17 × 86,623.78
  4. Step 4: Simplify right side
    352,860.96x = 45,849,461,737.36
  5. Step 5: Solve for x
    x = 45,849,461,737.36/352,860.96
  6. Step 6: Final answer
    x = 129,936.34

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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.