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Finding the Fourth Proportional to 18,482.41, 25,505.74 and 9,984.53

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Solution

The fourth proportional to 18,482.41, 25,505.74 and 9,984.53 is: 13,778.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,482.41 : 25,505.74 = 9,984.53 : x
  2. Step 2: Convert to fraction form
    18,482.41/25,505.74 = 9,984.53/x
  3. Step 3: Cross multiply
    18,482.41x = 25,505.74 × 9,984.53
  4. Step 4: Simplify right side
    18,482.41x = 254,662,826.20
  5. Step 5: Solve for x
    x = 254,662,826.20/18,482.41
  6. Step 6: Final answer
    x = 13,778.66

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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.