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Finding the Fourth Proportional to 666,896.63, 920,317.39 and 365,090.63

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Solution

The fourth proportional to 666,896.63, 920,317.39 and 365,090.63 is: 503,825.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,896.63 : 920,317.39 = 365,090.63 : x
  2. Step 2: Convert to fraction form
    666,896.63/920,317.39 = 365,090.63/x
  3. Step 3: Cross multiply
    666,896.63x = 920,317.39 × 365,090.63
  4. Step 4: Simplify right side
    666,896.63x = 335,999,250,200.74
  5. Step 5: Solve for x
    x = 335,999,250,200.74/666,896.63
  6. Step 6: Final answer
    x = 503,825.09

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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.