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Finding the Fourth Proportional to 403,015.30, 604,556.79 and 122,534.98

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Solution

The fourth proportional to 403,015.30, 604,556.79 and 122,534.98 is: 183,812.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,015.30 : 604,556.79 = 122,534.98 : x
  2. Step 2: Convert to fraction form
    403,015.30/604,556.79 = 122,534.98/x
  3. Step 3: Cross multiply
    403,015.30x = 604,556.79 × 122,534.98
  4. Step 4: Simplify right side
    403,015.30x = 74,079,354,171.51
  5. Step 5: Solve for x
    x = 74,079,354,171.51/403,015.30
  6. Step 6: Final answer
    x = 183,812.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.