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Finding the Fourth Proportional to 78,622.75, 108,472.41 and 44,628.67

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Solution

The fourth proportional to 78,622.75, 108,472.41 and 44,628.67 is: 61,572.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,622.75 : 108,472.41 = 44,628.67 : x
  2. Step 2: Convert to fraction form
    78,622.75/108,472.41 = 44,628.67/x
  3. Step 3: Cross multiply
    78,622.75x = 108,472.41 × 44,628.67
  4. Step 4: Simplify right side
    78,622.75x = 4,840,979,389.99
  5. Step 5: Solve for x
    x = 4,840,979,389.99/78,622.75
  6. Step 6: Final answer
    x = 61,572.25

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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.