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Finding the Fourth Proportional to 339,417.56, 509,127.78 and 114,779.18

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Solution

The fourth proportional to 339,417.56, 509,127.78 and 114,779.18 is: 172,169.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,417.56 : 509,127.78 = 114,779.18 : x
  2. Step 2: Convert to fraction form
    339,417.56/509,127.78 = 114,779.18/x
  3. Step 3: Cross multiply
    339,417.56x = 509,127.78 × 114,779.18
  4. Step 4: Simplify right side
    339,417.56x = 58,437,269,103.62
  5. Step 5: Solve for x
    x = 58,437,269,103.62/339,417.56
  6. Step 6: Final answer
    x = 172,169.26

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1.5x scale

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.