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Finding the Fourth Proportional to 78,671.43, 108,558.29 and 46,835.97

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Solution

The fourth proportional to 78,671.43, 108,558.29 and 46,835.97 is: 64,628.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,671.43 : 108,558.29 = 46,835.97 : x
  2. Step 2: Convert to fraction form
    78,671.43/108,558.29 = 46,835.97/x
  3. Step 3: Cross multiply
    78,671.43x = 108,558.29 × 46,835.97
  4. Step 4: Simplify right side
    78,671.43x = 5,084,432,579.51
  5. Step 5: Solve for x
    x = 5,084,432,579.51/78,671.43
  6. Step 6: Final answer
    x = 64,628.70

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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.