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Finding the Fourth Proportional to 8,921.98, 12,313.11 and 7,600.06

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Solution

The fourth proportional to 8,921.98, 12,313.11 and 7,600.06 is: 10,488.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.98 : 12,313.11 = 7,600.06 : x
  2. Step 2: Convert to fraction form
    8,921.98/12,313.11 = 7,600.06/x
  3. Step 3: Cross multiply
    8,921.98x = 12,313.11 × 7,600.06
  4. Step 4: Simplify right side
    8,921.98x = 93,580,374.79
  5. Step 5: Solve for x
    x = 93,580,374.79/8,921.98
  6. Step 6: Final answer
    x = 10,488.75

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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.