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Finding the Fourth Proportional to 644,617.60, 889,699.52 and 411,895.68

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Solution

The fourth proportional to 644,617.60, 889,699.52 and 411,895.68 is: 568,497.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,617.60 : 889,699.52 = 411,895.68 : x
  2. Step 2: Convert to fraction form
    644,617.60/889,699.52 = 411,895.68/x
  3. Step 3: Cross multiply
    644,617.60x = 889,699.52 × 411,895.68
  4. Step 4: Simplify right side
    644,617.60x = 366,463,388,786.07
  5. Step 5: Solve for x
    x = 366,463,388,786.07/644,617.60
  6. Step 6: Final answer
    x = 568,497.34

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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.