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Finding the Fourth Proportional to 79,732.80, 119,455.20 and 46,425.60

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Solution

The fourth proportional to 79,732.80, 119,455.20 and 46,425.60 is: 69,554.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,732.80 : 119,455.20 = 46,425.60 : x
  2. Step 2: Convert to fraction form
    79,732.80/119,455.20 = 46,425.60/x
  3. Step 3: Cross multiply
    79,732.80x = 119,455.20 × 46,425.60
  4. Step 4: Simplify right side
    79,732.80x = 5,545,779,333.12
  5. Step 5: Solve for x
    x = 5,545,779,333.12/79,732.80
  6. Step 6: Final answer
    x = 69,554.55

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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.