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Finding the Fourth Proportional to 189,783, 261,877.86 and 104,888.52

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Solution

The fourth proportional to 189,783, 261,877.86 and 104,888.52 is: 144,733.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,783 : 261,877.86 = 104,888.52 : x
  2. Step 2: Convert to fraction form
    189,783/261,877.86 = 104,888.52/x
  3. Step 3: Cross multiply
    189,783x = 261,877.86 × 104,888.52
  4. Step 4: Simplify right side
    189,783x = 27,467,981,156.17
  5. Step 5: Solve for x
    x = 27,467,981,156.17/189,783
  6. Step 6: Final answer
    x = 144,733.62

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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.