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Finding the Fourth Proportional to 77,571.38, 107,059.30 and 43,582.50

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Solution

The fourth proportional to 77,571.38, 107,059.30 and 43,582.50 is: 60,149.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,571.38 : 107,059.30 = 43,582.50 : x
  2. Step 2: Convert to fraction form
    77,571.38/107,059.30 = 43,582.50/x
  3. Step 3: Cross multiply
    77,571.38x = 107,059.30 × 43,582.50
  4. Step 4: Simplify right side
    77,571.38x = 4,665,911,942.25
  5. Step 5: Solve for x
    x = 4,665,911,942.25/77,571.38
  6. Step 6: Final answer
    x = 60,149.92

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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.