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Finding the Fourth Proportional to 13,994.61, 19,313.43 and 7,706.99

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Solution

The fourth proportional to 13,994.61, 19,313.43 and 7,706.99 is: 10,636.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.61 : 19,313.43 = 7,706.99 : x
  2. Step 2: Convert to fraction form
    13,994.61/19,313.43 = 7,706.99/x
  3. Step 3: Cross multiply
    13,994.61x = 19,313.43 × 7,706.99
  4. Step 4: Simplify right side
    13,994.61x = 148,848,315.31
  5. Step 5: Solve for x
    x = 148,848,315.31/13,994.61
  6. Step 6: Final answer
    x = 10,636.12

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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.