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Finding the Fourth Proportional to 34,043.08, 46,978.78 and 18,935.42

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Solution

The fourth proportional to 34,043.08, 46,978.78 and 18,935.42 is: 26,130.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,043.08 : 46,978.78 = 18,935.42 : x
  2. Step 2: Convert to fraction form
    34,043.08/46,978.78 = 18,935.42/x
  3. Step 3: Cross multiply
    34,043.08x = 46,978.78 × 18,935.42
  4. Step 4: Simplify right side
    34,043.08x = 889,562,930.39
  5. Step 5: Solve for x
    x = 889,562,930.39/34,043.08
  6. Step 6: Final answer
    x = 26,130.51

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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.