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Finding the Fourth Proportional to 9,641.75, 13,307.81 and 6,278.67

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Solution

The fourth proportional to 9,641.75, 13,307.81 and 6,278.67 is: 8,666.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,641.75 : 13,307.81 = 6,278.67 : x
  2. Step 2: Convert to fraction form
    9,641.75/13,307.81 = 6,278.67/x
  3. Step 3: Cross multiply
    9,641.75x = 13,307.81 × 6,278.67
  4. Step 4: Simplify right side
    9,641.75x = 83,555,316.02
  5. Step 5: Solve for x
    x = 83,555,316.02/9,641.75
  6. Step 6: Final answer
    x = 8,666.00

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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.