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Finding the Fourth Proportional to 356,961.21, 535,605.21 and 154,619.16

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Solution

The fourth proportional to 356,961.21, 535,605.21 and 154,619.16 is: 231,999.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,961.21 : 535,605.21 = 154,619.16 : x
  2. Step 2: Convert to fraction form
    356,961.21/535,605.21 = 154,619.16/x
  3. Step 3: Cross multiply
    356,961.21x = 535,605.21 × 154,619.16
  4. Step 4: Simplify right side
    356,961.21x = 82,814,827,661.82
  5. Step 5: Solve for x
    x = 82,814,827,661.82/356,961.21
  6. Step 6: Final answer
    x = 231,999.52

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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.