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Finding the Fourth Proportional to 69,783.90, 96,280.06 and 39,566.85

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Solution

The fourth proportional to 69,783.90, 96,280.06 and 39,566.85 is: 54,589.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,783.90 : 96,280.06 = 39,566.85 : x
  2. Step 2: Convert to fraction form
    69,783.90/96,280.06 = 39,566.85/x
  3. Step 3: Cross multiply
    69,783.90x = 96,280.06 × 39,566.85
  4. Step 4: Simplify right side
    69,783.90x = 3,809,498,932.71
  5. Step 5: Solve for x
    x = 3,809,498,932.71/69,783.90
  6. Step 6: Final answer
    x = 54,589.94

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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.