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Finding the Fourth Proportional to 9,279.54, 13,920.54 and 4,897.32

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Solution

The fourth proportional to 9,279.54, 13,920.54 and 4,897.32 is: 7,346.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,279.54 : 13,920.54 = 4,897.32 : x
  2. Step 2: Convert to fraction form
    9,279.54/13,920.54 = 4,897.32/x
  3. Step 3: Cross multiply
    9,279.54x = 13,920.54 × 4,897.32
  4. Step 4: Simplify right side
    9,279.54x = 68,173,338.95
  5. Step 5: Solve for x
    x = 68,173,338.95/9,279.54
  6. Step 6: Final answer
    x = 7,346.63

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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.