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Finding the Fourth Proportional to 7,474.58, 10,314.90 and 4,117.40

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Solution

The fourth proportional to 7,474.58, 10,314.90 and 4,117.40 is: 5,682.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,474.58 : 10,314.90 = 4,117.40 : x
  2. Step 2: Convert to fraction form
    7,474.58/10,314.90 = 4,117.40/x
  3. Step 3: Cross multiply
    7,474.58x = 10,314.90 × 4,117.40
  4. Step 4: Simplify right side
    7,474.58x = 42,470,517.69
  5. Step 5: Solve for x
    x = 42,470,517.69/7,474.58
  6. Step 6: Final answer
    x = 5,682.00

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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.