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Finding the Fourth Proportional to 11,799.88, 17,699.80 and 3,485.74

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Solution

The fourth proportional to 11,799.88, 17,699.80 and 3,485.74 is: 5,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,799.88 : 17,699.80 = 3,485.74 : x
  2. Step 2: Convert to fraction form
    11,799.88/17,699.80 = 3,485.74/x
  3. Step 3: Cross multiply
    11,799.88x = 17,699.80 × 3,485.74
  4. Step 4: Simplify right side
    11,799.88x = 61,696,825.39
  5. Step 5: Solve for x
    x = 61,696,825.39/11,799.88
  6. Step 6: Final answer
    x = 5,228.60

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1.5x scale

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.