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Finding the Fourth Proportional to 7,953.57, 10,976.94 and 4,809.76

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Solution

The fourth proportional to 7,953.57, 10,976.94 and 4,809.76 is: 6,638.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,953.57 : 10,976.94 = 4,809.76 : x
  2. Step 2: Convert to fraction form
    7,953.57/10,976.94 = 4,809.76/x
  3. Step 3: Cross multiply
    7,953.57x = 10,976.94 × 4,809.76
  4. Step 4: Simplify right side
    7,953.57x = 52,796,446.93
  5. Step 5: Solve for x
    x = 52,796,446.93/7,953.57
  6. Step 6: Final answer
    x = 6,638.08

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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.