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Finding the Fourth Proportional to 139,143.26, 208,748.86 and 44,373.46

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Solution

The fourth proportional to 139,143.26, 208,748.86 and 44,373.46 is: 66,571.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,143.26 : 208,748.86 = 44,373.46 : x
  2. Step 2: Convert to fraction form
    139,143.26/208,748.86 = 44,373.46/x
  3. Step 3: Cross multiply
    139,143.26x = 208,748.86 × 44,373.46
  4. Step 4: Simplify right side
    139,143.26x = 9,262,909,189.26
  5. Step 5: Solve for x
    x = 9,262,909,189.26/139,143.26
  6. Step 6: Final answer
    x = 66,571.02

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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.