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Finding the Fourth Proportional to 17,781.74, 24,539.06 and 9,824.15

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Solution

The fourth proportional to 17,781.74, 24,539.06 and 9,824.15 is: 13,557.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,781.74 : 24,539.06 = 9,824.15 : x
  2. Step 2: Convert to fraction form
    17,781.74/24,539.06 = 9,824.15/x
  3. Step 3: Cross multiply
    17,781.74x = 24,539.06 × 9,824.15
  4. Step 4: Simplify right side
    17,781.74x = 241,075,298.91
  5. Step 5: Solve for x
    x = 241,075,298.91/17,781.74
  6. Step 6: Final answer
    x = 13,557.46

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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.