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Finding the Fourth Proportional to 352,411.81, 486,328.77 and 191,266.86

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Solution

The fourth proportional to 352,411.81, 486,328.77 and 191,266.86 is: 263,948.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,411.81 : 486,328.77 = 191,266.86 : x
  2. Step 2: Convert to fraction form
    352,411.81/486,328.77 = 191,266.86/x
  3. Step 3: Cross multiply
    352,411.81x = 486,328.77 × 191,266.86
  4. Step 4: Simplify right side
    352,411.81x = 93,018,578,427.75
  5. Step 5: Solve for x
    x = 93,018,578,427.75/352,411.81
  6. Step 6: Final answer
    x = 263,948.53

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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.