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Finding the Fourth Proportional to 101,157.78, 151,541.93 and 63,221.88

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Solution

The fourth proportional to 101,157.78, 151,541.93 and 63,221.88 is: 94,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,157.78 : 151,541.93 = 63,221.88 : x
  2. Step 2: Convert to fraction form
    101,157.78/151,541.93 = 63,221.88/x
  3. Step 3: Cross multiply
    101,157.78x = 151,541.93 × 63,221.88
  4. Step 4: Simplify right side
    101,157.78x = 9,580,765,066.12
  5. Step 5: Solve for x
    x = 9,580,765,066.12/101,157.78
  6. Step 6: Final answer
    x = 94,711.10

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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.