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Finding the Fourth Proportional to 9,974.88, 14,954.16 and 4,128.32

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Solution

The fourth proportional to 9,974.88, 14,954.16 and 4,128.32 is: 6,189.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,974.88 : 14,954.16 = 4,128.32 : x
  2. Step 2: Convert to fraction form
    9,974.88/14,954.16 = 4,128.32/x
  3. Step 3: Cross multiply
    9,974.88x = 14,954.16 × 4,128.32
  4. Step 4: Simplify right side
    9,974.88x = 61,735,557.81
  5. Step 5: Solve for x
    x = 61,735,557.81/9,974.88
  6. Step 6: Final answer
    x = 6,189.10

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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.