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Finding the Fourth Proportional to 683,999.90, 959,174.50 and 683,999.90

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Solution

The fourth proportional to 683,999.90, 959,174.50 and 683,999.90 is: 959,174.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,999.90 : 959,174.50 = 683,999.90 : x
  2. Step 2: Convert to fraction form
    683,999.90/959,174.50 = 683,999.90/x
  3. Step 3: Cross multiply
    683,999.90x = 959,174.50 × 683,999.90
  4. Step 4: Simplify right side
    683,999.90x = 656,075,262,082.55
  5. Step 5: Solve for x
    x = 656,075,262,082.55/683,999.90
  6. Step 6: Final answer
    x = 959,174.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.