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Finding the Fourth Proportional to 86,418, 119,256.89 and 46,674

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Solution

The fourth proportional to 86,418, 119,256.89 and 46,674 is: 64,410.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,418 : 119,256.89 = 46,674 : x
  2. Step 2: Convert to fraction form
    86,418/119,256.89 = 46,674/x
  3. Step 3: Cross multiply
    86,418x = 119,256.89 × 46,674
  4. Step 4: Simplify right side
    86,418x = 5,566,195,850.49
  5. Step 5: Solve for x
    x = 5,566,195,850.49/86,418
  6. Step 6: Final answer
    x = 64,410.14

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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.