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Finding the Fourth Proportional to 328,925.76, 453,929.32 and 185,711.28

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Solution

The fourth proportional to 328,925.76, 453,929.32 and 185,711.28 is: 256,288.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,925.76 : 453,929.32 = 185,711.28 : x
  2. Step 2: Convert to fraction form
    328,925.76/453,929.32 = 185,711.28/x
  3. Step 3: Cross multiply
    328,925.76x = 453,929.32 × 185,711.28
  4. Step 4: Simplify right side
    328,925.76x = 84,299,795,046.73
  5. Step 5: Solve for x
    x = 84,299,795,046.73/328,925.76
  6. Step 6: Final answer
    x = 256,288.21

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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.