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Finding the Fourth Proportional to 9,329.85, 13,990.62 and 4,946.31

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Solution

The fourth proportional to 9,329.85, 13,990.62 and 4,946.31 is: 7,417.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,329.85 : 13,990.62 = 4,946.31 : x
  2. Step 2: Convert to fraction form
    9,329.85/13,990.62 = 4,946.31/x
  3. Step 3: Cross multiply
    9,329.85x = 13,990.62 × 4,946.31
  4. Step 4: Simplify right side
    9,329.85x = 69,201,943.61
  5. Step 5: Solve for x
    x = 69,201,943.61/9,329.85
  6. Step 6: Final answer
    x = 7,417.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.