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Finding the Fourth Proportional to 7,048.74, 9,728.30 and 4,064.00

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Solution

The fourth proportional to 7,048.74, 9,728.30 and 4,064.00 is: 5,608.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,048.74 : 9,728.30 = 4,064.00 : x
  2. Step 2: Convert to fraction form
    7,048.74/9,728.30 = 4,064.00/x
  3. Step 3: Cross multiply
    7,048.74x = 9,728.30 × 4,064.00
  4. Step 4: Simplify right side
    7,048.74x = 39,535,772.72
  5. Step 5: Solve for x
    x = 39,535,772.72/7,048.74
  6. Step 6: Final answer
    x = 5,608.91

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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.