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Finding the Fourth Proportional to 111,643.40, 167,322.42 and 52,348.28

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Solution

The fourth proportional to 111,643.40, 167,322.42 and 52,348.28 is: 78,455.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,643.40 : 167,322.42 = 52,348.28 : x
  2. Step 2: Convert to fraction form
    111,643.40/167,322.42 = 52,348.28/x
  3. Step 3: Cross multiply
    111,643.40x = 167,322.42 × 52,348.28
  4. Step 4: Simplify right side
    111,643.40x = 8,759,040,892.44
  5. Step 5: Solve for x
    x = 8,759,040,892.44/111,643.40
  6. Step 6: Final answer
    x = 78,455.52

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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.