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Finding the Fourth Proportional to 404,838.40, 607,257.60 and 398,617.60

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Solution

The fourth proportional to 404,838.40, 607,257.60 and 398,617.60 is: 597,926.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,838.40 : 607,257.60 = 398,617.60 : x
  2. Step 2: Convert to fraction form
    404,838.40/607,257.60 = 398,617.60/x
  3. Step 3: Cross multiply
    404,838.40x = 607,257.60 × 398,617.60
  4. Step 4: Simplify right side
    404,838.40x = 242,063,567,093.76
  5. Step 5: Solve for x
    x = 242,063,567,093.76/404,838.40
  6. Step 6: Final answer
    x = 597,926.40

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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.