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Finding the Fourth Proportional to 111,464.56, 153,806.64 and 63,721.04

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Solution

The fourth proportional to 111,464.56, 153,806.64 and 63,721.04 is: 87,926.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,464.56 : 153,806.64 = 63,721.04 : x
  2. Step 2: Convert to fraction form
    111,464.56/153,806.64 = 63,721.04/x
  3. Step 3: Cross multiply
    111,464.56x = 153,806.64 × 63,721.04
  4. Step 4: Simplify right side
    111,464.56x = 9,800,719,059.71
  5. Step 5: Solve for x
    x = 9,800,719,059.71/111,464.56
  6. Step 6: Final answer
    x = 87,926.77

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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.