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Finding the Fourth Proportional to 79,783.41, 119,686.05 and 35,409.18

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Solution

The fourth proportional to 79,783.41, 119,686.05 and 35,409.18 is: 53,118.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,783.41 : 119,686.05 = 35,409.18 : x
  2. Step 2: Convert to fraction form
    79,783.41/119,686.05 = 35,409.18/x
  3. Step 3: Cross multiply
    79,783.41x = 119,686.05 × 35,409.18
  4. Step 4: Simplify right side
    79,783.41x = 4,237,984,887.94
  5. Step 5: Solve for x
    x = 4,237,984,887.94/79,783.41
  6. Step 6: Final answer
    x = 53,118.62

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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.