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Finding the Fourth Proportional to 613,005.87, 919,543.41 and 186,555.63

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Solution

The fourth proportional to 613,005.87, 919,543.41 and 186,555.63 is: 279,843.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,005.87 : 919,543.41 = 186,555.63 : x
  2. Step 2: Convert to fraction form
    613,005.87/919,543.41 = 186,555.63/x
  3. Step 3: Cross multiply
    613,005.87x = 919,543.41 × 186,555.63
  4. Step 4: Simplify right side
    613,005.87x = 171,546,000,164.90
  5. Step 5: Solve for x
    x = 171,546,000,164.90/613,005.87
  6. Step 6: Final answer
    x = 279,843.98

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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.