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Finding the Fourth Proportional to 6,929.69, 9,575.21 and 5,134.60

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Solution

The fourth proportional to 6,929.69, 9,575.21 and 5,134.60 is: 7,094.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,929.69 : 9,575.21 = 5,134.60 : x
  2. Step 2: Convert to fraction form
    6,929.69/9,575.21 = 5,134.60/x
  3. Step 3: Cross multiply
    6,929.69x = 9,575.21 × 5,134.60
  4. Step 4: Simplify right side
    6,929.69x = 49,164,823.65
  5. Step 5: Solve for x
    x = 49,164,823.65/6,929.69
  6. Step 6: Final answer
    x = 7,094.81

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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.