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Finding the Fourth Proportional to 8,962.31, 12,362.94 and 5,376.31

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Solution

The fourth proportional to 8,962.31, 12,362.94 and 5,376.31 is: 7,416.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,962.31 : 12,362.94 = 5,376.31 : x
  2. Step 2: Convert to fraction form
    8,962.31/12,362.94 = 5,376.31/x
  3. Step 3: Cross multiply
    8,962.31x = 12,362.94 × 5,376.31
  4. Step 4: Simplify right side
    8,962.31x = 66,466,997.95
  5. Step 5: Solve for x
    x = 66,466,997.95/8,962.31
  6. Step 6: Final answer
    x = 7,416.28

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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.