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Finding the Fourth Proportional to 328,921.17, 453,911.22 and 178,018.17

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Solution

The fourth proportional to 328,921.17, 453,911.22 and 178,018.17 is: 245,665.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,921.17 : 453,911.22 = 178,018.17 : x
  2. Step 2: Convert to fraction form
    328,921.17/453,911.22 = 178,018.17/x
  3. Step 3: Cross multiply
    328,921.17x = 453,911.22 × 178,018.17
  4. Step 4: Simplify right side
    328,921.17x = 80,804,444,726.87
  5. Step 5: Solve for x
    x = 80,804,444,726.87/328,921.17
  6. Step 6: Final answer
    x = 245,665.08

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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.