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Finding the Fourth Proportional to 167,386.86, 230,992.47 and 90,907.95

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Solution

The fourth proportional to 167,386.86, 230,992.47 and 90,907.95 is: 125,452.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,386.86 : 230,992.47 = 90,907.95 : x
  2. Step 2: Convert to fraction form
    167,386.86/230,992.47 = 90,907.95/x
  3. Step 3: Cross multiply
    167,386.86x = 230,992.47 × 90,907.95
  4. Step 4: Simplify right side
    167,386.86x = 20,999,051,913.14
  5. Step 5: Solve for x
    x = 20,999,051,913.14/167,386.86
  6. Step 6: Final answer
    x = 125,452.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.