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Finding the Fourth Proportional to 28,193.84, 38,923.44 and 19,254.32

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Solution

The fourth proportional to 28,193.84, 38,923.44 and 19,254.32 is: 26,581.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,193.84 : 38,923.44 = 19,254.32 : x
  2. Step 2: Convert to fraction form
    28,193.84/38,923.44 = 19,254.32/x
  3. Step 3: Cross multiply
    28,193.84x = 38,923.44 × 19,254.32
  4. Step 4: Simplify right side
    28,193.84x = 749,444,369.26
  5. Step 5: Solve for x
    x = 749,444,369.26/28,193.84
  6. Step 6: Final answer
    x = 26,581.85

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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.