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Finding the Fourth Proportional to 356,969.72, 535,504.70 and 104,268.76

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Solution

The fourth proportional to 356,969.72, 535,504.70 and 104,268.76 is: 156,417.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,969.72 : 535,504.70 = 104,268.76 : x
  2. Step 2: Convert to fraction form
    356,969.72/535,504.70 = 104,268.76/x
  3. Step 3: Cross multiply
    356,969.72x = 535,504.70 × 104,268.76
  4. Step 4: Simplify right side
    356,969.72x = 55,836,409,965.08
  5. Step 5: Solve for x
    x = 55,836,409,965.08/356,969.72
  6. Step 6: Final answer
    x = 156,417.78

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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.