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Finding the Fourth Proportional to 644,452.88, 889,345.44 and 354,083.16

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Solution

The fourth proportional to 644,452.88, 889,345.44 and 354,083.16 is: 488,635.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,452.88 : 889,345.44 = 354,083.16 : x
  2. Step 2: Convert to fraction form
    644,452.88/889,345.44 = 354,083.16/x
  3. Step 3: Cross multiply
    644,452.88x = 889,345.44 × 354,083.16
  4. Step 4: Simplify right side
    644,452.88x = 314,902,247,061.84
  5. Step 5: Solve for x
    x = 314,902,247,061.84/644,452.88
  6. Step 6: Final answer
    x = 488,635.03

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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.