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Finding the Fourth Proportional to 9,626.64, 14,435.04 and 4,428

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Solution

The fourth proportional to 9,626.64, 14,435.04 and 4,428 is: 6,639.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,626.64 : 14,435.04 = 4,428 : x
  2. Step 2: Convert to fraction form
    9,626.64/14,435.04 = 4,428/x
  3. Step 3: Cross multiply
    9,626.64x = 14,435.04 × 4,428
  4. Step 4: Simplify right side
    9,626.64x = 63,918,357.12
  5. Step 5: Solve for x
    x = 63,918,357.12/9,626.64
  6. Step 6: Final answer
    x = 6,639.74

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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.