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Finding the Fourth Proportional to 18,674.94, 25,765.88 and 11,117.46

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Solution

The fourth proportional to 18,674.94, 25,765.88 and 11,117.46 is: 15,338.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.94 : 25,765.88 = 11,117.46 : x
  2. Step 2: Convert to fraction form
    18,674.94/25,765.88 = 11,117.46/x
  3. Step 3: Cross multiply
    18,674.94x = 25,765.88 × 11,117.46
  4. Step 4: Simplify right side
    18,674.94x = 286,451,140.26
  5. Step 5: Solve for x
    x = 286,451,140.26/18,674.94
  6. Step 6: Final answer
    x = 15,338.80

Related Problems

Find fourth proportional to 9,337.47, 12,882.94 and 5,558.73
Half scale
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Double scale
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Similar ratio
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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.