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Finding the Fourth Proportional to 189,668.52, 261,740.70 and 104,783.76

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Solution

The fourth proportional to 189,668.52, 261,740.70 and 104,783.76 is: 144,600.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,668.52 : 261,740.70 = 104,783.76 : x
  2. Step 2: Convert to fraction form
    189,668.52/261,740.70 = 104,783.76/x
  3. Step 3: Cross multiply
    189,668.52x = 261,740.70 × 104,783.76
  4. Step 4: Simplify right side
    189,668.52x = 27,426,174,691.03
  5. Step 5: Solve for x
    x = 27,426,174,691.03/189,668.52
  6. Step 6: Final answer
    x = 144,600.56

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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.