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Finding the Fourth Proportional to 13,994.67, 19,312.56 and 7,707

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Solution

The fourth proportional to 13,994.67, 19,312.56 and 7,707 is: 10,635.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.67 : 19,312.56 = 7,707 : x
  2. Step 2: Convert to fraction form
    13,994.67/19,312.56 = 7,707/x
  3. Step 3: Cross multiply
    13,994.67x = 19,312.56 × 7,707
  4. Step 4: Simplify right side
    13,994.67x = 148,841,899.92
  5. Step 5: Solve for x
    x = 148,841,899.92/13,994.67
  6. Step 6: Final answer
    x = 10,635.61

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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.