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Finding the Fourth Proportional to 12,700.71, 19,043.40 and 5,676.93

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Solution

The fourth proportional to 12,700.71, 19,043.40 and 5,676.93 is: 8,511.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.71 : 19,043.40 = 5,676.93 : x
  2. Step 2: Convert to fraction form
    12,700.71/19,043.40 = 5,676.93/x
  3. Step 3: Cross multiply
    12,700.71x = 19,043.40 × 5,676.93
  4. Step 4: Simplify right side
    12,700.71x = 108,108,048.76
  5. Step 5: Solve for x
    x = 108,108,048.76/12,700.71
  6. Step 6: Final answer
    x = 8,511.97

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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.