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Finding the Fourth Proportional to 111,853.71, 167,779.74 and 45,292.80

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Solution

The fourth proportional to 111,853.71, 167,779.74 and 45,292.80 is: 67,938.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,853.71 : 167,779.74 = 45,292.80 : x
  2. Step 2: Convert to fraction form
    111,853.71/167,779.74 = 45,292.80/x
  3. Step 3: Cross multiply
    111,853.71x = 167,779.74 × 45,292.80
  4. Step 4: Simplify right side
    111,853.71x = 7,599,214,207.87
  5. Step 5: Solve for x
    x = 7,599,214,207.87/111,853.71
  6. Step 6: Final answer
    x = 67,938.87

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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.