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Finding the Fourth Proportional to 12,603.60, 18,916.20 and 5,594.40

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Solution

The fourth proportional to 12,603.60, 18,916.20 and 5,594.40 is: 8,396.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.60 : 18,916.20 = 5,594.40 : x
  2. Step 2: Convert to fraction form
    12,603.60/18,916.20 = 5,594.40/x
  3. Step 3: Cross multiply
    12,603.60x = 18,916.20 × 5,594.40
  4. Step 4: Simplify right side
    12,603.60x = 105,824,789.28
  5. Step 5: Solve for x
    x = 105,824,789.28/12,603.60
  6. Step 6: Final answer
    x = 8,396.39

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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.