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Finding the Fourth Proportional to 411,939.40, 577,544.60 and 411,939.40

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Solution

The fourth proportional to 411,939.40, 577,544.60 and 411,939.40 is: 577,544.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,939.40 : 577,544.60 = 411,939.40 : x
  2. Step 2: Convert to fraction form
    411,939.40/577,544.60 = 411,939.40/x
  3. Step 3: Cross multiply
    411,939.40x = 577,544.60 × 411,939.40
  4. Step 4: Simplify right side
    411,939.40x = 237,913,375,997.24
  5. Step 5: Solve for x
    x = 237,913,375,997.24/411,939.40
  6. Step 6: Final answer
    x = 577,544.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.