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Finding the Fourth Proportional to 11,363.64, 15,672.60 and 9,356.46

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Solution

The fourth proportional to 11,363.64, 15,672.60 and 9,356.46 is: 12,904.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,363.64 : 15,672.60 = 9,356.46 : x
  2. Step 2: Convert to fraction form
    11,363.64/15,672.60 = 9,356.46/x
  3. Step 3: Cross multiply
    11,363.64x = 15,672.60 × 9,356.46
  4. Step 4: Simplify right side
    11,363.64x = 146,640,055.00
  5. Step 5: Solve for x
    x = 146,640,055.00/11,363.64
  6. Step 6: Final answer
    x = 12,904.32

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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.