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Finding the Fourth Proportional to 110,964.64, 153,123.32 and 63,209.20

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Solution

The fourth proportional to 110,964.64, 153,123.32 and 63,209.20 is: 87,224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,964.64 : 153,123.32 = 63,209.20 : x
  2. Step 2: Convert to fraction form
    110,964.64/153,123.32 = 63,209.20/x
  3. Step 3: Cross multiply
    110,964.64x = 153,123.32 × 63,209.20
  4. Step 4: Simplify right side
    110,964.64x = 9,678,802,558.54
  5. Step 5: Solve for x
    x = 9,678,802,558.54/110,964.64
  6. Step 6: Final answer
    x = 87,224.21

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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.