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Finding the Fourth Proportional to 7,755.72, 10,703.52 and 4,772.58

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Solution

The fourth proportional to 7,755.72, 10,703.52 and 4,772.58 is: 6,586.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,755.72 : 10,703.52 = 4,772.58 : x
  2. Step 2: Convert to fraction form
    7,755.72/10,703.52 = 4,772.58/x
  3. Step 3: Cross multiply
    7,755.72x = 10,703.52 × 4,772.58
  4. Step 4: Simplify right side
    7,755.72x = 51,083,405.48
  5. Step 5: Solve for x
    x = 51,083,405.48/7,755.72
  6. Step 6: Final answer
    x = 6,586.55

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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.