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Finding the Fourth Proportional to 653,283,998.60, 978,792,257.10 and 551,247,326.60

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Solution

The fourth proportional to 653,283,998.60, 978,792,257.10 and 551,247,326.60 is: 825,914,328.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,283,998.60 : 978,792,257.10 = 551,247,326.60 : x
  2. Step 2: Convert to fraction form
    653,283,998.60/978,792,257.10 = 551,247,326.60/x
  3. Step 3: Cross multiply
    653,283,998.60x = 978,792,257.10 × 551,247,326.60
  4. Step 4: Simplify right side
    653,283,998.60x = 539,556,615,023,154,880
  5. Step 5: Solve for x
    x = 539,556,615,023,154,880/653,283,998.60
  6. Step 6: Final answer
    x = 825,914,328.50

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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.