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Finding the Fourth Proportional to 189,717.78, 261,800.25 and 104,829.39

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Solution

The fourth proportional to 189,717.78, 261,800.25 and 104,829.39 is: 144,658.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,717.78 : 261,800.25 = 104,829.39 : x
  2. Step 2: Convert to fraction form
    189,717.78/261,800.25 = 104,829.39/x
  3. Step 3: Cross multiply
    189,717.78x = 261,800.25 × 104,829.39
  4. Step 4: Simplify right side
    189,717.78x = 27,444,360,509.35
  5. Step 5: Solve for x
    x = 27,444,360,509.35/189,717.78
  6. Step 6: Final answer
    x = 144,658.87

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1.5x scale

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.