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Finding the Fourth Proportional to 117,789.32, 176,238.11 and 69,783.69

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Solution

The fourth proportional to 117,789.32, 176,238.11 and 69,783.69 is: 104,411.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,789.32 : 176,238.11 = 69,783.69 : x
  2. Step 2: Convert to fraction form
    117,789.32/176,238.11 = 69,783.69/x
  3. Step 3: Cross multiply
    117,789.32x = 176,238.11 × 69,783.69
  4. Step 4: Simplify right side
    117,789.32x = 12,298,545,285.51
  5. Step 5: Solve for x
    x = 12,298,545,285.51/117,789.32
  6. Step 6: Final answer
    x = 104,411.38

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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.