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Finding the Fourth Proportional to 19,100.40, 28,661.06 and 7,414.08

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Solution

The fourth proportional to 19,100.40, 28,661.06 and 7,414.08 is: 11,125.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,100.40 : 28,661.06 = 7,414.08 : x
  2. Step 2: Convert to fraction form
    19,100.40/28,661.06 = 7,414.08/x
  3. Step 3: Cross multiply
    19,100.40x = 28,661.06 × 7,414.08
  4. Step 4: Simplify right side
    19,100.40x = 212,495,391.72
  5. Step 5: Solve for x
    x = 212,495,391.72/19,100.40
  6. Step 6: Final answer
    x = 11,125.18

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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.