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Finding the Fourth Proportional to 72,905.52, 100,617.72 and 46,046.72

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Solution

The fourth proportional to 72,905.52, 100,617.72 and 46,046.72 is: 63,549.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,905.52 : 100,617.72 = 46,046.72 : x
  2. Step 2: Convert to fraction form
    72,905.52/100,617.72 = 46,046.72/x
  3. Step 3: Cross multiply
    72,905.52x = 100,617.72 × 46,046.72
  4. Step 4: Simplify right side
    72,905.52x = 4,633,115,979.88
  5. Step 5: Solve for x
    x = 4,633,115,979.88/72,905.52
  6. Step 6: Final answer
    x = 63,549.59

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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.