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Finding the Fourth Proportional to 322,878.84, 445,565.85 and 186,918.54

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Solution

The fourth proportional to 322,878.84, 445,565.85 and 186,918.54 is: 257,943.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,878.84 : 445,565.85 = 186,918.54 : x
  2. Step 2: Convert to fraction form
    322,878.84/445,565.85 = 186,918.54/x
  3. Step 3: Cross multiply
    322,878.84x = 445,565.85 × 186,918.54
  4. Step 4: Simplify right side
    322,878.84x = 83,284,518,155.86
  5. Step 5: Solve for x
    x = 83,284,518,155.86/322,878.84
  6. Step 6: Final answer
    x = 257,943.56

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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.