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Finding the Fourth Proportional to 7,905.69, 10,909.71 and 4,369.14

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Solution

The fourth proportional to 7,905.69, 10,909.71 and 4,369.14 is: 6,029.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.69 : 10,909.71 = 4,369.14 : x
  2. Step 2: Convert to fraction form
    7,905.69/10,909.71 = 4,369.14/x
  3. Step 3: Cross multiply
    7,905.69x = 10,909.71 × 4,369.14
  4. Step 4: Simplify right side
    7,905.69x = 47,666,050.35
  5. Step 5: Solve for x
    x = 47,666,050.35/7,905.69
  6. Step 6: Final answer
    x = 6,029.33

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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.