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Finding the Fourth Proportional to 207,372.86, 310,816.54 and 79,205.14

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Solution

The fourth proportional to 207,372.86, 310,816.54 and 79,205.14 is: 118,715.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,372.86 : 310,816.54 = 79,205.14 : x
  2. Step 2: Convert to fraction form
    207,372.86/310,816.54 = 79,205.14/x
  3. Step 3: Cross multiply
    207,372.86x = 310,816.54 × 79,205.14
  4. Step 4: Simplify right side
    207,372.86x = 24,618,268,052.54
  5. Step 5: Solve for x
    x = 24,618,268,052.54/207,372.86
  6. Step 6: Final answer
    x = 118,715.00

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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.