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Finding the Fourth Proportional to 276,526.92, 415,011.84 and 126,837.72

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Solution

The fourth proportional to 276,526.92, 415,011.84 and 126,837.72 is: 190,358.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,526.92 : 415,011.84 = 126,837.72 : x
  2. Step 2: Convert to fraction form
    276,526.92/415,011.84 = 126,837.72/x
  3. Step 3: Cross multiply
    276,526.92x = 415,011.84 × 126,837.72
  4. Step 4: Simplify right side
    276,526.92x = 52,639,155,558.60
  5. Step 5: Solve for x
    x = 52,639,155,558.60/276,526.92
  6. Step 6: Final answer
    x = 190,358.16

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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.