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Finding the Fourth Proportional to 7,158.25, 9,879.47 and 4,365.37

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Solution

The fourth proportional to 7,158.25, 9,879.47 and 4,365.37 is: 6,024.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158.25 : 9,879.47 = 4,365.37 : x
  2. Step 2: Convert to fraction form
    7,158.25/9,879.47 = 4,365.37/x
  3. Step 3: Cross multiply
    7,158.25x = 9,879.47 × 4,365.37
  4. Step 4: Simplify right side
    7,158.25x = 43,127,520.13
  5. Step 5: Solve for x
    x = 43,127,520.13/7,158.25
  6. Step 6: Final answer
    x = 6,024.87

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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.