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Finding the Fourth Proportional to 612,950.70, 919,427.67 and 186,490.56

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Solution

The fourth proportional to 612,950.70, 919,427.67 and 186,490.56 is: 279,736.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,950.70 : 919,427.67 = 186,490.56 : x
  2. Step 2: Convert to fraction form
    612,950.70/919,427.67 = 186,490.56/x
  3. Step 3: Cross multiply
    612,950.70x = 919,427.67 × 186,490.56
  4. Step 4: Simplify right side
    612,950.70x = 171,464,581,057.80
  5. Step 5: Solve for x
    x = 171,464,581,057.80/612,950.70
  6. Step 6: Final answer
    x = 279,736.33

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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.