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Finding the Fourth Proportional to 9,892.76, 14,840.15 and 3,319.07

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Solution

The fourth proportional to 9,892.76, 14,840.15 and 3,319.07 is: 4,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,892.76 : 14,840.15 = 3,319.07 : x
  2. Step 2: Convert to fraction form
    9,892.76/14,840.15 = 3,319.07/x
  3. Step 3: Cross multiply
    9,892.76x = 14,840.15 × 3,319.07
  4. Step 4: Simplify right side
    9,892.76x = 49,255,405.86
  5. Step 5: Solve for x
    x = 49,255,405.86/9,892.76
  6. Step 6: Final answer
    x = 4,978.94

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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.