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Finding the Fourth Proportional to 167,015.64, 250,609.59 and 78,278.16

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Solution

The fourth proportional to 167,015.64, 250,609.59 and 78,278.16 is: 117,457.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,015.64 : 250,609.59 = 78,278.16 : x
  2. Step 2: Convert to fraction form
    167,015.64/250,609.59 = 78,278.16/x
  3. Step 3: Cross multiply
    167,015.64x = 250,609.59 × 78,278.16
  4. Step 4: Simplify right side
    167,015.64x = 19,617,257,583.55
  5. Step 5: Solve for x
    x = 19,617,257,583.55/167,015.64
  6. Step 6: Final answer
    x = 117,457.61

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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.