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Finding the Fourth Proportional to 19,263.97, 28,885.01 and 11,478.25

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Solution

The fourth proportional to 19,263.97, 28,885.01 and 11,478.25 is: 17,210.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,263.97 : 28,885.01 = 11,478.25 : x
  2. Step 2: Convert to fraction form
    19,263.97/28,885.01 = 11,478.25/x
  3. Step 3: Cross multiply
    19,263.97x = 28,885.01 × 11,478.25
  4. Step 4: Simplify right side
    19,263.97x = 331,549,322.52
  5. Step 5: Solve for x
    x = 331,549,322.52/19,263.97
  6. Step 6: Final answer
    x = 17,210.85

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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.