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Finding the Fourth Proportional to 9,328.63, 13,992.65 and 3,780.48

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Solution

The fourth proportional to 9,328.63, 13,992.65 and 3,780.48 is: 5,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,328.63 : 13,992.65 = 3,780.48 : x
  2. Step 2: Convert to fraction form
    9,328.63/13,992.65 = 3,780.48/x
  3. Step 3: Cross multiply
    9,328.63x = 13,992.65 × 3,780.48
  4. Step 4: Simplify right side
    9,328.63x = 52,898,933.47
  5. Step 5: Solve for x
    x = 52,898,933.47/9,328.63
  6. Step 6: Final answer
    x = 5,670.60

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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.