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Finding the Fourth Proportional to 638,014.70, 957,021.92 and 188,700.54

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Solution

The fourth proportional to 638,014.70, 957,021.92 and 188,700.54 is: 283,050.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,014.70 : 957,021.92 = 188,700.54 : x
  2. Step 2: Convert to fraction form
    638,014.70/957,021.92 = 188,700.54/x
  3. Step 3: Cross multiply
    638,014.70x = 957,021.92 × 188,700.54
  4. Step 4: Simplify right side
    638,014.70x = 180,590,553,095.84
  5. Step 5: Solve for x
    x = 180,590,553,095.84/638,014.70
  6. Step 6: Final answer
    x = 283,050.77

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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.