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Finding the Fourth Proportional to 7,392.80, 10,201.65 and 4,205.66

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Solution

The fourth proportional to 7,392.80, 10,201.65 and 4,205.66 is: 5,803.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,392.80 : 10,201.65 = 4,205.66 : x
  2. Step 2: Convert to fraction form
    7,392.80/10,201.65 = 4,205.66/x
  3. Step 3: Cross multiply
    7,392.80x = 10,201.65 × 4,205.66
  4. Step 4: Simplify right side
    7,392.80x = 42,904,671.34
  5. Step 5: Solve for x
    x = 42,904,671.34/7,392.80
  6. Step 6: Final answer
    x = 5,803.58

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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.