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Finding the Fourth Proportional to 70,803.79, 106,205.96 and 28,684.67

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Solution

The fourth proportional to 70,803.79, 106,205.96 and 28,684.67 is: 43,027.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,803.79 : 106,205.96 = 28,684.67 : x
  2. Step 2: Convert to fraction form
    70,803.79/106,205.96 = 28,684.67/x
  3. Step 3: Cross multiply
    70,803.79x = 106,205.96 × 28,684.67
  4. Step 4: Simplify right side
    70,803.79x = 3,046,482,240.18
  5. Step 5: Solve for x
    x = 3,046,482,240.18/70,803.79
  6. Step 6: Final answer
    x = 43,027.11

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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.