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Finding the Fourth Proportional to 7,040.05, 9,705.25 and 4,799.05

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Solution

The fourth proportional to 7,040.05, 9,705.25 and 4,799.05 is: 6,615.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,040.05 : 9,705.25 = 4,799.05 : x
  2. Step 2: Convert to fraction form
    7,040.05/9,705.25 = 4,799.05/x
  3. Step 3: Cross multiply
    7,040.05x = 9,705.25 × 4,799.05
  4. Step 4: Simplify right side
    7,040.05x = 46,575,961.75
  5. Step 5: Solve for x
    x = 46,575,961.75/7,040.05
  6. Step 6: Final answer
    x = 6,615.86

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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.