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Finding the Fourth Proportional to 76,988.36, 106,220.72 and 44,716.76

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Solution

The fourth proportional to 76,988.36, 106,220.72 and 44,716.76 is: 61,695.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,988.36 : 106,220.72 = 44,716.76 : x
  2. Step 2: Convert to fraction form
    76,988.36/106,220.72 = 44,716.76/x
  3. Step 3: Cross multiply
    76,988.36x = 106,220.72 × 44,716.76
  4. Step 4: Simplify right side
    76,988.36x = 4,749,846,443.27
  5. Step 5: Solve for x
    x = 4,749,846,443.27/76,988.36
  6. Step 6: Final answer
    x = 61,695.64

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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.