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Finding the Fourth Proportional to 936,335, 1,403,912 and 515,906.12

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Solution

The fourth proportional to 936,335, 1,403,912 and 515,906.12 is: 773,533.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,335 : 1,403,912 = 515,906.12 : x
  2. Step 2: Convert to fraction form
    936,335/1,403,912 = 515,906.12/x
  3. Step 3: Cross multiply
    936,335x = 1,403,912 × 515,906.12
  4. Step 4: Simplify right side
    936,335x = 724,286,792,741.44
  5. Step 5: Solve for x
    x = 724,286,792,741.44/936,335
  6. Step 6: Final answer
    x = 773,533.82

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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.