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Finding the Fourth Proportional to 666,318.89, 919,541.82 and 364,512.89

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Solution

The fourth proportional to 666,318.89, 919,541.82 and 364,512.89 is: 503,039.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,318.89 : 919,541.82 = 364,512.89 : x
  2. Step 2: Convert to fraction form
    666,318.89/919,541.82 = 364,512.89/x
  3. Step 3: Cross multiply
    666,318.89x = 919,541.82 × 364,512.89
  4. Step 4: Simplify right side
    666,318.89x = 335,184,841,686.35
  5. Step 5: Solve for x
    x = 335,184,841,686.35/666,318.89
  6. Step 6: Final answer
    x = 503,039.68

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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.