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Finding the Fourth Proportional to 666,319.89, 919,543.20 and 364,513.89

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Solution

The fourth proportional to 666,319.89, 919,543.20 and 364,513.89 is: 503,041.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,319.89 : 919,543.20 = 364,513.89 : x
  2. Step 2: Convert to fraction form
    666,319.89/919,543.20 = 364,513.89/x
  3. Step 3: Cross multiply
    666,319.89x = 919,543.20 × 364,513.89
  4. Step 4: Simplify right side
    666,319.89x = 335,186,264,257.33
  5. Step 5: Solve for x
    x = 335,186,264,257.33/666,319.89
  6. Step 6: Final answer
    x = 503,041.06

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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.