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Finding the Fourth Proportional to 9,879.98, 14,812.28 and 4,947.08

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Solution

The fourth proportional to 9,879.98, 14,812.28 and 4,947.08 is: 7,416.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.98 : 14,812.28 = 4,947.08 : x
  2. Step 2: Convert to fraction form
    9,879.98/14,812.28 = 4,947.08/x
  3. Step 3: Cross multiply
    9,879.98x = 14,812.28 × 4,947.08
  4. Step 4: Simplify right side
    9,879.98x = 73,277,534.14
  5. Step 5: Solve for x
    x = 73,277,534.14/9,879.98
  6. Step 6: Final answer
    x = 7,416.77

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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.