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Finding the Fourth Proportional to 111,570.40, 167,355.60 and 74,180.80

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Solution

The fourth proportional to 111,570.40, 167,355.60 and 74,180.80 is: 111,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,570.40 : 167,355.60 = 74,180.80 : x
  2. Step 2: Convert to fraction form
    111,570.40/167,355.60 = 74,180.80/x
  3. Step 3: Cross multiply
    111,570.40x = 167,355.60 × 74,180.80
  4. Step 4: Simplify right side
    111,570.40x = 12,414,572,292.48
  5. Step 5: Solve for x
    x = 12,414,572,292.48/111,570.40
  6. Step 6: Final answer
    x = 111,271.20

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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.