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Finding the Fourth Proportional to 18,482.06, 25,505.25 and 9,984.18

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Solution

The fourth proportional to 18,482.06, 25,505.25 and 9,984.18 is: 13,778.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,482.06 : 25,505.25 = 9,984.18 : x
  2. Step 2: Convert to fraction form
    18,482.06/25,505.25 = 9,984.18/x
  3. Step 3: Cross multiply
    18,482.06x = 25,505.25 × 9,984.18
  4. Step 4: Simplify right side
    18,482.06x = 254,649,006.95
  5. Step 5: Solve for x
    x = 254,649,006.95/18,482.06
  6. Step 6: Final answer
    x = 13,778.17

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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.