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Finding the Fourth Proportional to 7,048.40, 9,727.08 and 4,065.92

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Solution

The fourth proportional to 7,048.40, 9,727.08 and 4,065.92 is: 5,611.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,048.40 : 9,727.08 = 4,065.92 : x
  2. Step 2: Convert to fraction form
    7,048.40/9,727.08 = 4,065.92/x
  3. Step 3: Cross multiply
    7,048.40x = 9,727.08 × 4,065.92
  4. Step 4: Simplify right side
    7,048.40x = 39,549,529.11
  5. Step 5: Solve for x
    x = 39,549,529.11/7,048.40
  6. Step 6: Final answer
    x = 5,611.14

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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.