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Finding the Fourth Proportional to 16,985.77, 25,482.39 and 7,119.97

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Solution

The fourth proportional to 16,985.77, 25,482.39 and 7,119.97 is: 10,681.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,985.77 : 25,482.39 = 7,119.97 : x
  2. Step 2: Convert to fraction form
    16,985.77/25,482.39 = 7,119.97/x
  3. Step 3: Cross multiply
    16,985.77x = 25,482.39 × 7,119.97
  4. Step 4: Simplify right side
    16,985.77x = 181,433,852.33
  5. Step 5: Solve for x
    x = 181,433,852.33/16,985.77
  6. Step 6: Final answer
    x = 10,681.52

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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.