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Finding the Fourth Proportional to 9,426, 13,007.58 and 5,447

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Solution

The fourth proportional to 9,426, 13,007.58 and 5,447 is: 7,516.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,426 : 13,007.58 = 5,447 : x
  2. Step 2: Convert to fraction form
    9,426/13,007.58 = 5,447/x
  3. Step 3: Cross multiply
    9,426x = 13,007.58 × 5,447
  4. Step 4: Simplify right side
    9,426x = 70,852,288.26
  5. Step 5: Solve for x
    x = 70,852,288.26/9,426
  6. Step 6: Final answer
    x = 7,516.69

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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.