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Finding the Fourth Proportional to 639,185.62, 959,144.75 and 260,036.37

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Solution

The fourth proportional to 639,185.62, 959,144.75 and 260,036.37 is: 390,203.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,185.62 : 959,144.75 = 260,036.37 : x
  2. Step 2: Convert to fraction form
    639,185.62/959,144.75 = 260,036.37/x
  3. Step 3: Cross multiply
    639,185.62x = 959,144.75 × 260,036.37
  4. Step 4: Simplify right side
    639,185.62x = 249,412,519,094.56
  5. Step 5: Solve for x
    x = 249,412,519,094.56/639,185.62
  6. Step 6: Final answer
    x = 390,203.58

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Similar ratio
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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.