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Finding the Fourth Proportional to 111,221.40, 153,496.53 and 63,481.94

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Solution

The fourth proportional to 111,221.40, 153,496.53 and 63,481.94 is: 87,611.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,221.40 : 153,496.53 = 63,481.94 : x
  2. Step 2: Convert to fraction form
    111,221.40/153,496.53 = 63,481.94/x
  3. Step 3: Cross multiply
    111,221.40x = 153,496.53 × 63,481.94
  4. Step 4: Simplify right side
    111,221.40x = 9,744,257,507.67
  5. Step 5: Solve for x
    x = 9,744,257,507.67/111,221.40
  6. Step 6: Final answer
    x = 87,611.35

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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.