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Finding the Fourth Proportional to 641,203.80, 961,805.70 and 241,857.60

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Solution

The fourth proportional to 641,203.80, 961,805.70 and 241,857.60 is: 362,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,203.80 : 961,805.70 = 241,857.60 : x
  2. Step 2: Convert to fraction form
    641,203.80/961,805.70 = 241,857.60/x
  3. Step 3: Cross multiply
    641,203.80x = 961,805.70 × 241,857.60
  4. Step 4: Simplify right side
    641,203.80x = 232,620,018,268.32
  5. Step 5: Solve for x
    x = 232,620,018,268.32/641,203.80
  6. Step 6: Final answer
    x = 362,786.40

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Double scale
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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.