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Finding the Fourth Proportional to 9,153.64, 13,731.54 and 6,859.72

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Solution

The fourth proportional to 9,153.64, 13,731.54 and 6,859.72 is: 10,290.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,153.64 : 13,731.54 = 6,859.72 : x
  2. Step 2: Convert to fraction form
    9,153.64/13,731.54 = 6,859.72/x
  3. Step 3: Cross multiply
    9,153.64x = 13,731.54 × 6,859.72
  4. Step 4: Simplify right side
    9,153.64x = 94,194,519.57
  5. Step 5: Solve for x
    x = 94,194,519.57/9,153.64
  6. Step 6: Final answer
    x = 10,290.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.