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Finding the Fourth Proportional to 98,391.50, 135,790.73 and 60,173.40

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Solution

The fourth proportional to 98,391.50, 135,790.73 and 60,173.40 is: 83,045.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,391.50 : 135,790.73 = 60,173.40 : x
  2. Step 2: Convert to fraction form
    98,391.50/135,790.73 = 60,173.40/x
  3. Step 3: Cross multiply
    98,391.50x = 135,790.73 × 60,173.40
  4. Step 4: Simplify right side
    98,391.50x = 8,170,989,912.58
  5. Step 5: Solve for x
    x = 8,170,989,912.58/98,391.50
  6. Step 6: Final answer
    x = 83,045.69

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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.