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Finding the Fourth Proportional to 98,543.54, 135,979.08 and 55,524.98

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Solution

The fourth proportional to 98,543.54, 135,979.08 and 55,524.98 is: 76,618.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,543.54 : 135,979.08 = 55,524.98 : x
  2. Step 2: Convert to fraction form
    98,543.54/135,979.08 = 55,524.98/x
  3. Step 3: Cross multiply
    98,543.54x = 135,979.08 × 55,524.98
  4. Step 4: Simplify right side
    98,543.54x = 7,550,235,697.42
  5. Step 5: Solve for x
    x = 7,550,235,697.42/98,543.54
  6. Step 6: Final answer
    x = 76,618.27

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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.