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Finding the Fourth Proportional to 74,538.64, 111,807.64 and 21,948.08

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Solution

The fourth proportional to 74,538.64, 111,807.64 and 21,948.08 is: 32,922.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,538.64 : 111,807.64 = 21,948.08 : x
  2. Step 2: Convert to fraction form
    74,538.64/111,807.64 = 21,948.08/x
  3. Step 3: Cross multiply
    74,538.64x = 111,807.64 × 21,948.08
  4. Step 4: Simplify right side
    74,538.64x = 2,453,963,027.33
  5. Step 5: Solve for x
    x = 2,453,963,027.33/74,538.64
  6. Step 6: Final answer
    x = 32,922.03

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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.