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Finding the Fourth Proportional to 111,580.33, 153,904.44 and 71,276.20

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Solution

The fourth proportional to 111,580.33, 153,904.44 and 71,276.20 is: 98,312.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,580.33 : 153,904.44 = 71,276.20 : x
  2. Step 2: Convert to fraction form
    111,580.33/153,904.44 = 71,276.20/x
  3. Step 3: Cross multiply
    111,580.33x = 153,904.44 × 71,276.20
  4. Step 4: Simplify right side
    111,580.33x = 10,969,722,520.42
  5. Step 5: Solve for x
    x = 10,969,722,520.42/111,580.33
  6. Step 6: Final answer
    x = 98,312.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.