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Finding the Fourth Proportional to 170,886.08, 256,183.16 and 120,808.64

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Solution

The fourth proportional to 170,886.08, 256,183.16 and 120,808.64 is: 181,109.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,886.08 : 256,183.16 = 120,808.64 : x
  2. Step 2: Convert to fraction form
    170,886.08/256,183.16 = 120,808.64/x
  3. Step 3: Cross multiply
    170,886.08x = 256,183.16 × 120,808.64
  4. Step 4: Simplify right side
    170,886.08x = 30,949,139,150.50
  5. Step 5: Solve for x
    x = 30,949,139,150.50/170,886.08
  6. Step 6: Final answer
    x = 181,109.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.