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Finding the Fourth Proportional to 111,483.08, 153,894.64 and 68,469.54

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Solution

The fourth proportional to 111,483.08, 153,894.64 and 68,469.54 is: 94,517.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,483.08 : 153,894.64 = 68,469.54 : x
  2. Step 2: Convert to fraction form
    111,483.08/153,894.64 = 68,469.54/x
  3. Step 3: Cross multiply
    111,483.08x = 153,894.64 × 68,469.54
  4. Step 4: Simplify right side
    111,483.08x = 10,537,095,038.09
  5. Step 5: Solve for x
    x = 10,537,095,038.09/111,483.08
  6. Step 6: Final answer
    x = 94,517.44

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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.