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Finding the Fourth Proportional to 207,253.76, 310,847.48 and 74,109.20

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Solution

The fourth proportional to 207,253.76, 310,847.48 and 74,109.20 is: 111,151.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,253.76 : 310,847.48 = 74,109.20 : x
  2. Step 2: Convert to fraction form
    207,253.76/310,847.48 = 74,109.20/x
  3. Step 3: Cross multiply
    207,253.76x = 310,847.48 × 74,109.20
  4. Step 4: Simplify right side
    207,253.76x = 23,036,658,064.82
  5. Step 5: Solve for x
    x = 23,036,658,064.82/207,253.76
  6. Step 6: Final answer
    x = 111,151.94

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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.