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Finding the Fourth Proportional to 7,892.64, 10,879.68 and 5,900.16

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Solution

The fourth proportional to 7,892.64, 10,879.68 and 5,900.16 is: 8,133.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.64 : 10,879.68 = 5,900.16 : x
  2. Step 2: Convert to fraction form
    7,892.64/10,879.68 = 5,900.16/x
  3. Step 3: Cross multiply
    7,892.64x = 10,879.68 × 5,900.16
  4. Step 4: Simplify right side
    7,892.64x = 64,191,852.75
  5. Step 5: Solve for x
    x = 64,191,852.75/7,892.64
  6. Step 6: Final answer
    x = 8,133.13

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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.