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Finding the Fourth Proportional to 7,062.66, 9,742.42 and 4,405.45

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Solution

The fourth proportional to 7,062.66, 9,742.42 and 4,405.45 is: 6,076.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,062.66 : 9,742.42 = 4,405.45 : x
  2. Step 2: Convert to fraction form
    7,062.66/9,742.42 = 4,405.45/x
  3. Step 3: Cross multiply
    7,062.66x = 9,742.42 × 4,405.45
  4. Step 4: Simplify right side
    7,062.66x = 42,919,744.19
  5. Step 5: Solve for x
    x = 42,919,744.19/7,062.66
  6. Step 6: Final answer
    x = 6,076.99

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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.