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Finding the Fourth Proportional to 7,048.65, 9,723.40 and 5,720.02

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Solution

The fourth proportional to 7,048.65, 9,723.40 and 5,720.02 is: 7,890.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,048.65 : 9,723.40 = 5,720.02 : x
  2. Step 2: Convert to fraction form
    7,048.65/9,723.40 = 5,720.02/x
  3. Step 3: Cross multiply
    7,048.65x = 9,723.40 × 5,720.02
  4. Step 4: Simplify right side
    7,048.65x = 55,618,042.47
  5. Step 5: Solve for x
    x = 55,618,042.47/7,048.65
  6. Step 6: Final answer
    x = 7,890.60

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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.