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Finding the Fourth Proportional to 7,490.15, 10,340.15 and 4,658.44

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Solution

The fourth proportional to 7,490.15, 10,340.15 and 4,658.44 is: 6,430.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,490.15 : 10,340.15 = 4,658.44 : x
  2. Step 2: Convert to fraction form
    7,490.15/10,340.15 = 4,658.44/x
  3. Step 3: Cross multiply
    7,490.15x = 10,340.15 × 4,658.44
  4. Step 4: Simplify right side
    7,490.15x = 48,168,968.05
  5. Step 5: Solve for x
    x = 48,168,968.05/7,490.15
  6. Step 6: Final answer
    x = 6,430.97

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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.