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Finding the Fourth Proportional to 47,310.54, 70,664.22 and 42,800.67

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Solution

The fourth proportional to 47,310.54, 70,664.22 and 42,800.67 is: 63,928.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,310.54 : 70,664.22 = 42,800.67 : x
  2. Step 2: Convert to fraction form
    47,310.54/70,664.22 = 42,800.67/x
  3. Step 3: Cross multiply
    47,310.54x = 70,664.22 × 42,800.67
  4. Step 4: Simplify right side
    47,310.54x = 3,024,476,095.04
  5. Step 5: Solve for x
    x = 3,024,476,095.04/47,310.54
  6. Step 6: Final answer
    x = 63,928.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.