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Finding the Fourth Proportional to 7,040.69, 9,713.79 and 4,056.45

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Solution

The fourth proportional to 7,040.69, 9,713.79 and 4,056.45 is: 5,596.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,040.69 : 9,713.79 = 4,056.45 : x
  2. Step 2: Convert to fraction form
    7,040.69/9,713.79 = 4,056.45/x
  3. Step 3: Cross multiply
    7,040.69x = 9,713.79 × 4,056.45
  4. Step 4: Simplify right side
    7,040.69x = 39,403,503.45
  5. Step 5: Solve for x
    x = 39,403,503.45/7,040.69
  6. Step 6: Final answer
    x = 5,596.54

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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.