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Finding the Fourth Proportional to 74,464.80, 111,502.80 and 48,026.40

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Solution

The fourth proportional to 74,464.80, 111,502.80 and 48,026.40 is: 71,914.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,464.80 : 111,502.80 = 48,026.40 : x
  2. Step 2: Convert to fraction form
    74,464.80/111,502.80 = 48,026.40/x
  3. Step 3: Cross multiply
    74,464.80x = 111,502.80 × 48,026.40
  4. Step 4: Simplify right side
    74,464.80x = 5,355,078,073.92
  5. Step 5: Solve for x
    x = 5,355,078,073.92/74,464.80
  6. Step 6: Final answer
    x = 71,914.22

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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.