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Finding the Fourth Proportional to 7,758.63, 10,700.61 and 4,769.12

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Solution

The fourth proportional to 7,758.63, 10,700.61 and 4,769.12 is: 6,577.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,758.63 : 10,700.61 = 4,769.12 : x
  2. Step 2: Convert to fraction form
    7,758.63/10,700.61 = 4,769.12/x
  3. Step 3: Cross multiply
    7,758.63x = 10,700.61 × 4,769.12
  4. Step 4: Simplify right side
    7,758.63x = 51,032,439.66
  5. Step 5: Solve for x
    x = 51,032,439.66/7,758.63
  6. Step 6: Final answer
    x = 6,577.51

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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.