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Finding the Fourth Proportional to 644,150.36, 889,272.61 and 496,653.05

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Solution

The fourth proportional to 644,150.36, 889,272.61 and 496,653.05 is: 685,647.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,150.36 : 889,272.61 = 496,653.05 : x
  2. Step 2: Convert to fraction form
    644,150.36/889,272.61 = 496,653.05/x
  3. Step 3: Cross multiply
    644,150.36x = 889,272.61 × 496,653.05
  4. Step 4: Simplify right side
    644,150.36x = 441,659,955,019.51
  5. Step 5: Solve for x
    x = 441,659,955,019.51/644,150.36
  6. Step 6: Final answer
    x = 685,647.30

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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.