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Finding the Fourth Proportional to 352,447.10, 486,363.93 and 191,298.71

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Solution

The fourth proportional to 352,447.10, 486,363.93 and 191,298.71 is: 263,985.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,447.10 : 486,363.93 = 191,298.71 : x
  2. Step 2: Convert to fraction form
    352,447.10/486,363.93 = 191,298.71/x
  3. Step 3: Cross multiply
    352,447.10x = 486,363.93 × 191,298.71
  4. Step 4: Simplify right side
    352,447.10x = 93,040,792,898.07
  5. Step 5: Solve for x
    x = 93,040,792,898.07/352,447.10
  6. Step 6: Final answer
    x = 263,985.13

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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.