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Finding the Fourth Proportional to 7,230.79, 9,975.18 and 4,246.57

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Solution

The fourth proportional to 7,230.79, 9,975.18 and 4,246.57 is: 5,858.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,230.79 : 9,975.18 = 4,246.57 : x
  2. Step 2: Convert to fraction form
    7,230.79/9,975.18 = 4,246.57/x
  3. Step 3: Cross multiply
    7,230.79x = 9,975.18 × 4,246.57
  4. Step 4: Simplify right side
    7,230.79x = 42,360,300.13
  5. Step 5: Solve for x
    x = 42,360,300.13/7,230.79
  6. Step 6: Final answer
    x = 5,858.32

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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.