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Finding the Fourth Proportional to 74,681.64, 111,963.24 and 37,221.30

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Solution

The fourth proportional to 74,681.64, 111,963.24 and 37,221.30 is: 55,802.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,681.64 : 111,963.24 = 37,221.30 : x
  2. Step 2: Convert to fraction form
    74,681.64/111,963.24 = 37,221.30/x
  3. Step 3: Cross multiply
    74,681.64x = 111,963.24 × 37,221.30
  4. Step 4: Simplify right side
    74,681.64x = 4,167,417,345.01
  5. Step 5: Solve for x
    x = 4,167,417,345.01/74,681.64
  6. Step 6: Final answer
    x = 55,802.43

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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.