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Finding the Fourth Proportional to 692,605,190.76, 955,796,085 and 375,065,984.64

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Solution

The fourth proportional to 692,605,190.76, 955,796,085 and 375,065,984.64 is: 517,591,557.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,605,190.76 : 955,796,085 = 375,065,984.64 : x
  2. Step 2: Convert to fraction form
    692,605,190.76/955,796,085 = 375,065,984.64/x
  3. Step 3: Cross multiply
    692,605,190.76x = 955,796,085 × 375,065,984.64
  4. Step 4: Simplify right side
    692,605,190.76x = 358,486,599,735,582,144
  5. Step 5: Solve for x
    x = 358,486,599,735,582,144/692,605,190.76
  6. Step 6: Final answer
    x = 517,591,557.96

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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.