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Finding the Fourth Proportional to 576,048.78, 863,969.31 and 155,226.42

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Solution

The fourth proportional to 576,048.78, 863,969.31 and 155,226.42 is: 232,811.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,048.78 : 863,969.31 = 155,226.42 : x
  2. Step 2: Convert to fraction form
    576,048.78/863,969.31 = 155,226.42/x
  3. Step 3: Cross multiply
    576,048.78x = 863,969.31 × 155,226.42
  4. Step 4: Simplify right side
    576,048.78x = 134,110,862,981.17
  5. Step 5: Solve for x
    x = 134,110,862,981.17/576,048.78
  6. Step 6: Final answer
    x = 232,811.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.