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Finding the Fourth Proportional to 14,265.78, 19,678.86 and 8,296.78

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Solution

The fourth proportional to 14,265.78, 19,678.86 and 8,296.78 is: 11,444.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,265.78 : 19,678.86 = 8,296.78 : x
  2. Step 2: Convert to fraction form
    14,265.78/19,678.86 = 8,296.78/x
  3. Step 3: Cross multiply
    14,265.78x = 19,678.86 × 8,296.78
  4. Step 4: Simplify right side
    14,265.78x = 163,271,172.07
  5. Step 5: Solve for x
    x = 163,271,172.07/14,265.78
  6. Step 6: Final answer
    x = 11,444.95

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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.