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Finding the Fourth Proportional to 207,468.56, 311,235.66 and 74,345.88

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Solution

The fourth proportional to 207,468.56, 311,235.66 and 74,345.88 is: 111,530.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,468.56 : 311,235.66 = 74,345.88 : x
  2. Step 2: Convert to fraction form
    207,468.56/311,235.66 = 74,345.88/x
  3. Step 3: Cross multiply
    207,468.56x = 311,235.66 × 74,345.88
  4. Step 4: Simplify right side
    207,468.56x = 23,139,089,030.08
  5. Step 5: Solve for x
    x = 23,139,089,030.08/207,468.56
  6. Step 6: Final answer
    x = 111,530.58

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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.