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Finding the Fourth Proportional to 411,017.40, 616,065.30 and 211,260.60

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Solution

The fourth proportional to 411,017.40, 616,065.30 and 211,260.60 is: 316,654.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,017.40 : 616,065.30 = 211,260.60 : x
  2. Step 2: Convert to fraction form
    411,017.40/616,065.30 = 211,260.60/x
  3. Step 3: Cross multiply
    411,017.40x = 616,065.30 × 211,260.60
  4. Step 4: Simplify right side
    411,017.40x = 130,150,324,917.18
  5. Step 5: Solve for x
    x = 130,150,324,917.18/411,017.40
  6. Step 6: Final answer
    x = 316,654.05

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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.