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Finding the Fourth Proportional to 7,272.80, 10,024.80 and 5,698.16

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Solution

The fourth proportional to 7,272.80, 10,024.80 and 5,698.16 is: 7,854.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,272.80 : 10,024.80 = 5,698.16 : x
  2. Step 2: Convert to fraction form
    7,272.80/10,024.80 = 5,698.16/x
  3. Step 3: Cross multiply
    7,272.80x = 10,024.80 × 5,698.16
  4. Step 4: Simplify right side
    7,272.80x = 57,122,914.37
  5. Step 5: Solve for x
    x = 57,122,914.37/7,272.80
  6. Step 6: Final answer
    x = 7,854.32

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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.