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Finding the Fourth Proportional to 74,246.40, 111,369.60 and 54,563.40

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Solution

The fourth proportional to 74,246.40, 111,369.60 and 54,563.40 is: 81,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,246.40 : 111,369.60 = 54,563.40 : x
  2. Step 2: Convert to fraction form
    74,246.40/111,369.60 = 54,563.40/x
  3. Step 3: Cross multiply
    74,246.40x = 111,369.60 × 54,563.40
  4. Step 4: Simplify right side
    74,246.40x = 6,076,704,032.64
  5. Step 5: Solve for x
    x = 6,076,704,032.64/74,246.40
  6. Step 6: Final answer
    x = 81,845.10

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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.