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Finding the Fourth Proportional to 328,419.41, 453,141.51 and 199,354.70

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Solution

The fourth proportional to 328,419.41, 453,141.51 and 199,354.70 is: 275,062.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,419.41 : 453,141.51 = 199,354.70 : x
  2. Step 2: Convert to fraction form
    328,419.41/453,141.51 = 199,354.70/x
  3. Step 3: Cross multiply
    328,419.41x = 453,141.51 × 199,354.70
  4. Step 4: Simplify right side
    328,419.41x = 90,335,889,783.60
  5. Step 5: Solve for x
    x = 90,335,889,783.60/328,419.41
  6. Step 6: Final answer
    x = 275,062.58

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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.