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Finding the Fourth Proportional to 74,425.80, 111,444.30 and 70,926.60

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Solution

The fourth proportional to 74,425.80, 111,444.30 and 70,926.60 is: 106,204.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,425.80 : 111,444.30 = 70,926.60 : x
  2. Step 2: Convert to fraction form
    74,425.80/111,444.30 = 70,926.60/x
  3. Step 3: Cross multiply
    74,425.80x = 111,444.30 × 70,926.60
  4. Step 4: Simplify right side
    74,425.80x = 7,904,365,288.38
  5. Step 5: Solve for x
    x = 7,904,365,288.38/74,425.80
  6. Step 6: Final answer
    x = 106,204.64

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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.