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Finding the Fourth Proportional to 5,607.10, 7,681.76 and 5,396.91

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Solution

The fourth proportional to 5,607.10, 7,681.76 and 5,396.91 is: 7,393.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,607.10 : 7,681.76 = 5,396.91 : x
  2. Step 2: Convert to fraction form
    5,607.10/7,681.76 = 5,396.91/x
  3. Step 3: Cross multiply
    5,607.10x = 7,681.76 × 5,396.91
  4. Step 4: Simplify right side
    5,607.10x = 41,457,752.05
  5. Step 5: Solve for x
    x = 41,457,752.05/5,607.10
  6. Step 6: Final answer
    x = 7,393.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.