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Finding the Fourth Proportional to 339,666.40, 509,548.20 and 103,027.60

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Solution

The fourth proportional to 339,666.40, 509,548.20 and 103,027.60 is: 154,556.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,666.40 : 509,548.20 = 103,027.60 : x
  2. Step 2: Convert to fraction form
    339,666.40/509,548.20 = 103,027.60/x
  3. Step 3: Cross multiply
    339,666.40x = 509,548.20 × 103,027.60
  4. Step 4: Simplify right side
    339,666.40x = 52,497,528,130.32
  5. Step 5: Solve for x
    x = 52,497,528,130.32/339,666.40
  6. Step 6: Final answer
    x = 154,556.14

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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.