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Finding the Fourth Proportional to 627,693.75, 866,199.12 and 355,786.67

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Solution

The fourth proportional to 627,693.75, 866,199.12 and 355,786.67 is: 490,975.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,693.75 : 866,199.12 = 355,786.67 : x
  2. Step 2: Convert to fraction form
    627,693.75/866,199.12 = 355,786.67/x
  3. Step 3: Cross multiply
    627,693.75x = 866,199.12 × 355,786.67
  4. Step 4: Simplify right side
    627,693.75x = 308,182,096,130.74
  5. Step 5: Solve for x
    x = 308,182,096,130.74/627,693.75
  6. Step 6: Final answer
    x = 490,975.25

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1.5x scale

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.