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Finding the Fourth Proportional to 352,492.05, 486,439.65 and 191,347.21

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Solution

The fourth proportional to 352,492.05, 486,439.65 and 191,347.21 is: 264,059.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,492.05 : 486,439.65 = 191,347.21 : x
  2. Step 2: Convert to fraction form
    352,492.05/486,439.65 = 191,347.21/x
  3. Step 3: Cross multiply
    352,492.05x = 486,439.65 × 191,347.21
  4. Step 4: Simplify right side
    352,492.05x = 93,078,869,860.88
  5. Step 5: Solve for x
    x = 93,078,869,860.88/352,492.05
  6. Step 6: Final answer
    x = 264,059.49

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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.