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Finding the Fourth Proportional to 69,364.16, 104,043.81 and 19,443.86

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Solution

The fourth proportional to 69,364.16, 104,043.81 and 19,443.86 is: 29,165.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,364.16 : 104,043.81 = 19,443.86 : x
  2. Step 2: Convert to fraction form
    69,364.16/104,043.81 = 19,443.86/x
  3. Step 3: Cross multiply
    69,364.16x = 104,043.81 × 19,443.86
  4. Step 4: Simplify right side
    69,364.16x = 2,023,013,275.51
  5. Step 5: Solve for x
    x = 2,023,013,275.51/69,364.16
  6. Step 6: Final answer
    x = 29,165.11

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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.