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Finding the Fourth Proportional to 416,320.26, 624,539.31 and 128,155.67

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Solution

The fourth proportional to 416,320.26, 624,539.31 and 128,155.67 is: 192,251.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,320.26 : 624,539.31 = 128,155.67 : x
  2. Step 2: Convert to fraction form
    416,320.26/624,539.31 = 128,155.67/x
  3. Step 3: Cross multiply
    416,320.26x = 624,539.31 × 128,155.67
  4. Step 4: Simplify right side
    416,320.26x = 80,038,250,591.69
  5. Step 5: Solve for x
    x = 80,038,250,591.69/416,320.26
  6. Step 6: Final answer
    x = 192,251.63

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1.5x scale

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.