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Finding the Fourth Proportional to 235,221.36, 352,804.47 and 66,756.48

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Solution

The fourth proportional to 235,221.36, 352,804.47 and 66,756.48 is: 100,126.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,221.36 : 352,804.47 = 66,756.48 : x
  2. Step 2: Convert to fraction form
    235,221.36/352,804.47 = 66,756.48/x
  3. Step 3: Cross multiply
    235,221.36x = 352,804.47 × 66,756.48
  4. Step 4: Simplify right side
    235,221.36x = 23,551,984,545.47
  5. Step 5: Solve for x
    x = 23,551,984,545.47/235,221.36
  6. Step 6: Final answer
    x = 100,126.90

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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.