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Finding the Fourth Proportional to 112,657.92, 168,179.70 and 104,784.72

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Solution

The fourth proportional to 112,657.92, 168,179.70 and 104,784.72 is: 156,426.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,657.92 : 168,179.70 = 104,784.72 : x
  2. Step 2: Convert to fraction form
    112,657.92/168,179.70 = 104,784.72/x
  3. Step 3: Cross multiply
    112,657.92x = 168,179.70 × 104,784.72
  4. Step 4: Simplify right side
    112,657.92x = 17,622,662,774.18
  5. Step 5: Solve for x
    x = 17,622,662,774.18/112,657.92
  6. Step 6: Final answer
    x = 156,426.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.