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Finding the Fourth Proportional to 26,388, 36,415.58 and 19,679.58

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Solution

The fourth proportional to 26,388, 36,415.58 and 19,679.58 is: 27,157.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,388 : 36,415.58 = 19,679.58 : x
  2. Step 2: Convert to fraction form
    26,388/36,415.58 = 19,679.58/x
  3. Step 3: Cross multiply
    26,388x = 36,415.58 × 19,679.58
  4. Step 4: Simplify right side
    26,388x = 716,643,221.46
  5. Step 5: Solve for x
    x = 716,643,221.46/26,388
  6. Step 6: Final answer
    x = 27,157.92

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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.