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Finding the Fourth Proportional to 57,438.40, 86,157.44 and 17,995.68

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Solution

The fourth proportional to 57,438.40, 86,157.44 and 17,995.68 is: 26,993.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,438.40 : 86,157.44 = 17,995.68 : x
  2. Step 2: Convert to fraction form
    57,438.40/86,157.44 = 17,995.68/x
  3. Step 3: Cross multiply
    57,438.40x = 86,157.44 × 17,995.68
  4. Step 4: Simplify right side
    57,438.40x = 1,550,461,719.86
  5. Step 5: Solve for x
    x = 1,550,461,719.86/57,438.40
  6. Step 6: Final answer
    x = 26,993.47

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.