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Finding the Fourth Proportional to 666,712.56, 920,085.48 and 364,906.56

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Solution

The fourth proportional to 666,712.56, 920,085.48 and 364,906.56 is: 503,583.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,712.56 : 920,085.48 = 364,906.56 : x
  2. Step 2: Convert to fraction form
    666,712.56/920,085.48 = 364,906.56/x
  3. Step 3: Cross multiply
    666,712.56x = 920,085.48 × 364,906.56
  4. Step 4: Simplify right side
    666,712.56x = 335,745,227,412.75
  5. Step 5: Solve for x
    x = 335,745,227,412.75/666,712.56
  6. Step 6: Final answer
    x = 503,583.17

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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.