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Finding the Fourth Proportional to 13,152.70, 19,730.85 and 4,830.70

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Solution

The fourth proportional to 13,152.70, 19,730.85 and 4,830.70 is: 7,246.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.70 : 19,730.85 = 4,830.70 : x
  2. Step 2: Convert to fraction form
    13,152.70/19,730.85 = 4,830.70/x
  3. Step 3: Cross multiply
    13,152.70x = 19,730.85 × 4,830.70
  4. Step 4: Simplify right side
    13,152.70x = 95,313,817.10
  5. Step 5: Solve for x
    x = 95,313,817.10/13,152.70
  6. Step 6: Final answer
    x = 7,246.71

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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.