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Finding the Fourth Proportional to 111,245.01, 153,529.11 and 63,505.54

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Solution

The fourth proportional to 111,245.01, 153,529.11 and 63,505.54 is: 87,643.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,245.01 : 153,529.11 = 63,505.54 : x
  2. Step 2: Convert to fraction form
    111,245.01/153,529.11 = 63,505.54/x
  3. Step 3: Cross multiply
    111,245.01x = 153,529.11 × 63,505.54
  4. Step 4: Simplify right side
    111,245.01x = 9,749,949,036.27
  5. Step 5: Solve for x
    x = 9,749,949,036.27/111,245.01
  6. Step 6: Final answer
    x = 87,643.93

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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.