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Finding the Fourth Proportional to 58,671.42, 80,945.34 and 38,539.20

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Solution

The fourth proportional to 58,671.42, 80,945.34 and 38,539.20 is: 53,170.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,671.42 : 80,945.34 = 38,539.20 : x
  2. Step 2: Convert to fraction form
    58,671.42/80,945.34 = 38,539.20/x
  3. Step 3: Cross multiply
    58,671.42x = 80,945.34 × 38,539.20
  4. Step 4: Simplify right side
    58,671.42x = 3,119,568,647.33
  5. Step 5: Solve for x
    x = 3,119,568,647.33/58,671.42
  6. Step 6: Final answer
    x = 53,170.16

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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.