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Finding the Fourth Proportional to 5,372.34, 7,417.27 and 4,380

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Solution

The fourth proportional to 5,372.34, 7,417.27 and 4,380 is: 6,047.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,372.34 : 7,417.27 = 4,380 : x
  2. Step 2: Convert to fraction form
    5,372.34/7,417.27 = 4,380/x
  3. Step 3: Cross multiply
    5,372.34x = 7,417.27 × 4,380
  4. Step 4: Simplify right side
    5,372.34x = 32,487,642.60
  5. Step 5: Solve for x
    x = 32,487,642.60/5,372.34
  6. Step 6: Final answer
    x = 6,047.21

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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.