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Finding the Fourth Proportional to 777,701,999.40, 1,166,552,999.10 and 777,701,999.40

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Solution

The fourth proportional to 777,701,999.40, 1,166,552,999.10 and 777,701,999.40 is: 1,166,552,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,701,999.40 : 1,166,552,999.10 = 777,701,999.40 : x
  2. Step 2: Convert to fraction form
    777,701,999.40/1,166,552,999.10 = 777,701,999.40/x
  3. Step 3: Cross multiply
    777,701,999.40x = 1,166,552,999.10 × 777,701,999.40
  4. Step 4: Simplify right side
    777,701,999.40x = 907,230,599,806,136,320
  5. Step 5: Solve for x
    x = 907,230,599,806,136,320/777,701,999.40
  6. Step 6: Final answer
    x = 1,166,552,999.10

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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.