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Finding the Fourth Proportional to 72,922.30, 100,640.89 and 46,063.51

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Solution

The fourth proportional to 72,922.30, 100,640.89 and 46,063.51 is: 63,572.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,922.30 : 100,640.89 = 46,063.51 : x
  2. Step 2: Convert to fraction form
    72,922.30/100,640.89 = 46,063.51/x
  3. Step 3: Cross multiply
    72,922.30x = 100,640.89 × 46,063.51
  4. Step 4: Simplify right side
    72,922.30x = 4,635,872,139.72
  5. Step 5: Solve for x
    x = 4,635,872,139.72/72,922.30
  6. Step 6: Final answer
    x = 63,572.77

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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.