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Finding the Fourth Proportional to 328,705.76, 453,580.72 and 190,836.96

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Solution

The fourth proportional to 328,705.76, 453,580.72 and 190,836.96 is: 263,335.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,705.76 : 453,580.72 = 190,836.96 : x
  2. Step 2: Convert to fraction form
    328,705.76/453,580.72 = 190,836.96/x
  3. Step 3: Cross multiply
    328,705.76x = 453,580.72 × 190,836.96
  4. Step 4: Simplify right side
    328,705.76x = 86,559,965,719.41
  5. Step 5: Solve for x
    x = 86,559,965,719.41/328,705.76
  6. Step 6: Final answer
    x = 263,335.71

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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.