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Finding the Fourth Proportional to 328,881.28, 453,856.62 and 177,978.28

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Solution

The fourth proportional to 328,881.28, 453,856.62 and 177,978.28 is: 245,610.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,881.28 : 453,856.62 = 177,978.28 : x
  2. Step 2: Convert to fraction form
    328,881.28/453,856.62 = 177,978.28/x
  3. Step 3: Cross multiply
    328,881.28x = 453,856.62 × 177,978.28
  4. Step 4: Simplify right side
    328,881.28x = 80,776,620,594.21
  5. Step 5: Solve for x
    x = 80,776,620,594.21/328,881.28
  6. Step 6: Final answer
    x = 245,610.27

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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.