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Finding the Fourth Proportional to 1,248,398,885.01, 1,722,792,495.78 and 683,871,375.09

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Solution

The fourth proportional to 1,248,398,885.01, 1,722,792,495.78 and 683,871,375.09 is: 943,743,612.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,398,885.01 : 1,722,792,495.78 = 683,871,375.09 : x
  2. Step 2: Convert to fraction form
    1,248,398,885.01/1,722,792,495.78 = 683,871,375.09/x
  3. Step 3: Cross multiply
    1,248,398,885.01x = 1,722,792,495.78 × 683,871,375.09
  4. Step 4: Simplify right side
    1,248,398,885.01x = 1,178,168,473,083,801,600
  5. Step 5: Solve for x
    x = 1,178,168,473,083,801,600/1,248,398,885.01
  6. Step 6: Final answer
    x = 943,743,612.10

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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.