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Finding the Fourth Proportional to 77,385.48, 116,078.21 and 51,084.07

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Solution

The fourth proportional to 77,385.48, 116,078.21 and 51,084.07 is: 76,626.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,385.48 : 116,078.21 = 51,084.07 : x
  2. Step 2: Convert to fraction form
    77,385.48/116,078.21 = 51,084.07/x
  3. Step 3: Cross multiply
    77,385.48x = 116,078.21 × 51,084.07
  4. Step 4: Simplify right side
    77,385.48x = 5,929,747,338.41
  5. Step 5: Solve for x
    x = 5,929,747,338.41/77,385.48
  6. Step 6: Final answer
    x = 76,626.10

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1.5x scale

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.