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Finding the Fourth Proportional to 79,798.83, 119,548.76 and 71,583

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Solution

The fourth proportional to 79,798.83, 119,548.76 and 71,583 is: 107,240.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,798.83 : 119,548.76 = 71,583 : x
  2. Step 2: Convert to fraction form
    79,798.83/119,548.76 = 71,583/x
  3. Step 3: Cross multiply
    79,798.83x = 119,548.76 × 71,583
  4. Step 4: Simplify right side
    79,798.83x = 8,557,658,529.17
  5. Step 5: Solve for x
    x = 8,557,658,529.17/79,798.83
  6. Step 6: Final answer
    x = 107,240.40

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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.