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Finding the Fourth Proportional to 208,672.14, 313,030.72 and 66,483.86

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Solution

The fourth proportional to 208,672.14, 313,030.72 and 66,483.86 is: 99,732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,672.14 : 313,030.72 = 66,483.86 : x
  2. Step 2: Convert to fraction form
    208,672.14/313,030.72 = 66,483.86/x
  3. Step 3: Cross multiply
    208,672.14x = 313,030.72 × 66,483.86
  4. Step 4: Simplify right side
    208,672.14x = 20,811,490,564.18
  5. Step 5: Solve for x
    x = 20,811,490,564.18/208,672.14
  6. Step 6: Final answer
    x = 99,732.96

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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.