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Finding the Fourth Proportional to 326,923.38, 490,384.14 and 87,037.26

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Solution

The fourth proportional to 326,923.38, 490,384.14 and 87,037.26 is: 130,555.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,923.38 : 490,384.14 = 87,037.26 : x
  2. Step 2: Convert to fraction form
    326,923.38/490,384.14 = 87,037.26/x
  3. Step 3: Cross multiply
    326,923.38x = 490,384.14 × 87,037.26
  4. Step 4: Simplify right side
    326,923.38x = 42,681,691,893.06
  5. Step 5: Solve for x
    x = 42,681,691,893.06/326,923.38
  6. Step 6: Final answer
    x = 130,555.64

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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.