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Finding the Fourth Proportional to 72,905.54, 100,609.56 and 41,074.70

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Solution

The fourth proportional to 72,905.54, 100,609.56 and 41,074.70 is: 56,683.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,905.54 : 100,609.56 = 41,074.70 : x
  2. Step 2: Convert to fraction form
    72,905.54/100,609.56 = 41,074.70/x
  3. Step 3: Cross multiply
    72,905.54x = 100,609.56 × 41,074.70
  4. Step 4: Simplify right side
    72,905.54x = 4,132,506,991.08
  5. Step 5: Solve for x
    x = 4,132,506,991.08/72,905.54
  6. Step 6: Final answer
    x = 56,683.03

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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.