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Finding the Fourth Proportional to 121,188.47, 181,795.16 and 46,371.53

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Solution

The fourth proportional to 121,188.47, 181,795.16 and 46,371.53 is: 69,562.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,188.47 : 181,795.16 = 46,371.53 : x
  2. Step 2: Convert to fraction form
    121,188.47/181,795.16 = 46,371.53/x
  3. Step 3: Cross multiply
    121,188.47x = 181,795.16 × 46,371.53
  4. Step 4: Simplify right side
    121,188.47x = 8,430,120,286.21
  5. Step 5: Solve for x
    x = 8,430,120,286.21/121,188.47
  6. Step 6: Final answer
    x = 69,562.07

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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.