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Finding the Fourth Proportional to 74,455.80, 111,489.30 and 48,017.40

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Solution

The fourth proportional to 74,455.80, 111,489.30 and 48,017.40 is: 71,900.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,455.80 : 111,489.30 = 48,017.40 : x
  2. Step 2: Convert to fraction form
    74,455.80/111,489.30 = 48,017.40/x
  3. Step 3: Cross multiply
    74,455.80x = 111,489.30 × 48,017.40
  4. Step 4: Simplify right side
    74,455.80x = 5,353,426,313.82
  5. Step 5: Solve for x
    x = 5,353,426,313.82/74,455.80
  6. Step 6: Final answer
    x = 71,900.73

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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.