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Finding the Fourth Proportional to 613,804,568.70, 920,706,853.05 and 368,916,555.90

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Solution

The fourth proportional to 613,804,568.70, 920,706,853.05 and 368,916,555.90 is: 553,374,833.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,804,568.70 : 920,706,853.05 = 368,916,555.90 : x
  2. Step 2: Convert to fraction form
    613,804,568.70/920,706,853.05 = 368,916,555.90/x
  3. Step 3: Cross multiply
    613,804,568.70x = 920,706,853.05 × 368,916,555.90
  4. Step 4: Simplify right side
    613,804,568.70x = 339,664,001,220,733,376
  5. Step 5: Solve for x
    x = 339,664,001,220,733,376/613,804,568.70
  6. Step 6: Final answer
    x = 553,374,833.85

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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.