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Finding the Fourth Proportional to 328,521.40, 453,358.54 and 177,618.40

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Solution

The fourth proportional to 328,521.40, 453,358.54 and 177,618.40 is: 245,112.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,521.40 : 453,358.54 = 177,618.40 : x
  2. Step 2: Convert to fraction form
    328,521.40/453,358.54 = 177,618.40/x
  3. Step 3: Cross multiply
    328,521.40x = 453,358.54 × 177,618.40
  4. Step 4: Simplify right side
    328,521.40x = 80,524,818,501.14
  5. Step 5: Solve for x
    x = 80,524,818,501.14/328,521.40
  6. Step 6: Final answer
    x = 245,112.86

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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.