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Finding the Fourth Proportional to 505,876.36, 698,123.46 and 279,536.68

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Solution

The fourth proportional to 505,876.36, 698,123.46 and 279,536.68 is: 385,768.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,876.36 : 698,123.46 = 279,536.68 : x
  2. Step 2: Convert to fraction form
    505,876.36/698,123.46 = 279,536.68/x
  3. Step 3: Cross multiply
    505,876.36x = 698,123.46 × 279,536.68
  4. Step 4: Simplify right side
    505,876.36x = 195,151,114,238.51
  5. Step 5: Solve for x
    x = 195,151,114,238.51/505,876.36
  6. Step 6: Final answer
    x = 385,768.40

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Double scale
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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.