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Finding the Fourth Proportional to 44,144.76, 66,228.66 and 12,978.84

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Solution

The fourth proportional to 44,144.76, 66,228.66 and 12,978.84 is: 19,471.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,144.76 : 66,228.66 = 12,978.84 : x
  2. Step 2: Convert to fraction form
    44,144.76/66,228.66 = 12,978.84/x
  3. Step 3: Cross multiply
    44,144.76x = 66,228.66 × 12,978.84
  4. Step 4: Simplify right side
    44,144.76x = 859,571,181.55
  5. Step 5: Solve for x
    x = 859,571,181.55/44,144.76
  6. Step 6: Final answer
    x = 19,471.65

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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.