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Finding the Fourth Proportional to 84,216.38, 116,218.70 and 46,490.63

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Solution

The fourth proportional to 84,216.38, 116,218.70 and 46,490.63 is: 64,157.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,216.38 : 116,218.70 = 46,490.63 : x
  2. Step 2: Convert to fraction form
    84,216.38/116,218.70 = 46,490.63/x
  3. Step 3: Cross multiply
    84,216.38x = 116,218.70 × 46,490.63
  4. Step 4: Simplify right side
    84,216.38x = 5,403,079,941.57
  5. Step 5: Solve for x
    x = 5,403,079,941.57/84,216.38
  6. Step 6: Final answer
    x = 64,157.12

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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.