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Finding the Fourth Proportional to 426,265,233.60, 639,397,850.40 and 426,265,233.60

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Solution

The fourth proportional to 426,265,233.60, 639,397,850.40 and 426,265,233.60 is: 639,397,850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,265,233.60 : 639,397,850.40 = 426,265,233.60 : x
  2. Step 2: Convert to fraction form
    426,265,233.60/639,397,850.40 = 426,265,233.60/x
  3. Step 3: Cross multiply
    426,265,233.60x = 639,397,850.40 × 426,265,233.60
  4. Step 4: Simplify right side
    426,265,233.60x = 272,553,074,064,093,856
  5. Step 5: Solve for x
    x = 272,553,074,064,093,856/426,265,233.60
  6. Step 6: Final answer
    x = 639,397,850.40

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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.