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Finding the Fourth Proportional to 644,131.44, 888,817.71 and 357,596.16

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Solution

The fourth proportional to 644,131.44, 888,817.71 and 357,596.16 is: 493,436.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,131.44 : 888,817.71 = 357,596.16 : x
  2. Step 2: Convert to fraction form
    644,131.44/888,817.71 = 357,596.16/x
  3. Step 3: Cross multiply
    644,131.44x = 888,817.71 × 357,596.16
  4. Step 4: Simplify right side
    644,131.44x = 317,837,800,035.99
  5. Step 5: Solve for x
    x = 317,837,800,035.99/644,131.44
  6. Step 6: Final answer
    x = 493,436.25

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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.