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Finding the Fourth Proportional to 9,908.72, 13,673.95 and 5,432.39

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Solution

The fourth proportional to 9,908.72, 13,673.95 and 5,432.39 is: 7,496.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,908.72 : 13,673.95 = 5,432.39 : x
  2. Step 2: Convert to fraction form
    9,908.72/13,673.95 = 5,432.39/x
  3. Step 3: Cross multiply
    9,908.72x = 13,673.95 × 5,432.39
  4. Step 4: Simplify right side
    9,908.72x = 74,282,202.08
  5. Step 5: Solve for x
    x = 74,282,202.08/9,908.72
  6. Step 6: Final answer
    x = 7,496.65

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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.