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Finding the Fourth Proportional to 112,300.92, 154,975.41 and 61,999.92

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Solution

The fourth proportional to 112,300.92, 154,975.41 and 61,999.92 is: 85,559.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,300.92 : 154,975.41 = 61,999.92 : x
  2. Step 2: Convert to fraction form
    112,300.92/154,975.41 = 61,999.92/x
  3. Step 3: Cross multiply
    112,300.92x = 154,975.41 × 61,999.92
  4. Step 4: Simplify right side
    112,300.92x = 9,608,463,021.97
  5. Step 5: Solve for x
    x = 9,608,463,021.97/112,300.92
  6. Step 6: Final answer
    x = 85,559.97

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1.5x scale

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.