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Finding the Fourth Proportional to 328,645.31, 453,530.53 and 177,742.31

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Solution

The fourth proportional to 328,645.31, 453,530.53 and 177,742.31 is: 245,284.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,645.31 : 453,530.53 = 177,742.31 : x
  2. Step 2: Convert to fraction form
    328,645.31/453,530.53 = 177,742.31/x
  3. Step 3: Cross multiply
    328,645.31x = 453,530.53 × 177,742.31
  4. Step 4: Simplify right side
    328,645.31x = 80,611,564,057.72
  5. Step 5: Solve for x
    x = 80,611,564,057.72/328,645.31
  6. Step 6: Final answer
    x = 245,284.39

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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.