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Finding the Fourth Proportional to 505,886.72, 698,192.88 and 291,022.88

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Solution

The fourth proportional to 505,886.72, 698,192.88 and 291,022.88 is: 401,651.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,886.72 : 698,192.88 = 291,022.88 : x
  2. Step 2: Convert to fraction form
    505,886.72/698,192.88 = 291,022.88/x
  3. Step 3: Cross multiply
    505,886.72x = 698,192.88 × 291,022.88
  4. Step 4: Simplify right side
    505,886.72x = 203,190,102,733.09
  5. Step 5: Solve for x
    x = 203,190,102,733.09/505,886.72
  6. Step 6: Final answer
    x = 401,651.39

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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.