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Finding the Fourth Proportional to 14,197.60, 19,590.96 and 7,907.68

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Solution

The fourth proportional to 14,197.60, 19,590.96 and 7,907.68 is: 10,911.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,197.60 : 19,590.96 = 7,907.68 : x
  2. Step 2: Convert to fraction form
    14,197.60/19,590.96 = 7,907.68/x
  3. Step 3: Cross multiply
    14,197.60x = 19,590.96 × 7,907.68
  4. Step 4: Simplify right side
    14,197.60x = 154,919,042.57
  5. Step 5: Solve for x
    x = 154,919,042.57/14,197.60
  6. Step 6: Final answer
    x = 10,911.64

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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.