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Finding the Fourth Proportional to 7,040.70, 9,708.17 and 4,803.89

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Solution

The fourth proportional to 7,040.70, 9,708.17 and 4,803.89 is: 6,623.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,040.70 : 9,708.17 = 4,803.89 : x
  2. Step 2: Convert to fraction form
    7,040.70/9,708.17 = 4,803.89/x
  3. Step 3: Cross multiply
    7,040.70x = 9,708.17 × 4,803.89
  4. Step 4: Simplify right side
    7,040.70x = 46,636,908.22
  5. Step 5: Solve for x
    x = 46,636,908.22/7,040.70
  6. Step 6: Final answer
    x = 6,623.90

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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.