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Finding the Fourth Proportional to 613,804,593.70, 920,706,890.55 and 368,916,580.90

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Solution

The fourth proportional to 613,804,593.70, 920,706,890.55 and 368,916,580.90 is: 553,374,871.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,804,593.70 : 920,706,890.55 = 368,916,580.90 : x
  2. Step 2: Convert to fraction form
    613,804,593.70/920,706,890.55 = 368,916,580.90/x
  3. Step 3: Cross multiply
    613,804,593.70x = 920,706,890.55 × 368,916,580.90
  4. Step 4: Simplify right side
    613,804,593.70x = 339,664,038,072,776,512
  5. Step 5: Solve for x
    x = 339,664,038,072,776,512/613,804,593.70
  6. Step 6: Final answer
    x = 553,374,871.35

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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.