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Finding the Fourth Proportional to 111,404.21, 153,735.12 and 63,654.48

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Solution

The fourth proportional to 111,404.21, 153,735.12 and 63,654.48 is: 87,841.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,404.21 : 153,735.12 = 63,654.48 : x
  2. Step 2: Convert to fraction form
    111,404.21/153,735.12 = 63,654.48/x
  3. Step 3: Cross multiply
    111,404.21x = 153,735.12 × 63,654.48
  4. Step 4: Simplify right side
    111,404.21x = 9,785,929,121.34
  5. Step 5: Solve for x
    x = 9,785,929,121.34/111,404.21
  6. Step 6: Final answer
    x = 87,841.65

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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.