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Finding the Fourth Proportional to 699,341,190, 965,065,493.52 and 386,068,661.52

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Solution

The fourth proportional to 699,341,190, 965,065,493.52 and 386,068,661.52 is: 532,760,759.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,341,190 : 965,065,493.52 = 386,068,661.52 : x
  2. Step 2: Convert to fraction form
    699,341,190/965,065,493.52 = 386,068,661.52/x
  3. Step 3: Cross multiply
    699,341,190x = 965,065,493.52 × 386,068,661.52
  4. Step 4: Simplify right side
    699,341,190x = 372,581,543,362,404,608
  5. Step 5: Solve for x
    x = 372,581,543,362,404,608/699,341,190
  6. Step 6: Final answer
    x = 532,760,759.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.