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Finding the Fourth Proportional to 12,898.92, 19,340.10 and 7,059.63

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Solution

The fourth proportional to 12,898.92, 19,340.10 and 7,059.63 is: 10,584.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,898.92 : 19,340.10 = 7,059.63 : x
  2. Step 2: Convert to fraction form
    12,898.92/19,340.10 = 7,059.63/x
  3. Step 3: Cross multiply
    12,898.92x = 19,340.10 × 7,059.63
  4. Step 4: Simplify right side
    12,898.92x = 136,533,950.16
  5. Step 5: Solve for x
    x = 136,533,950.16/12,898.92
  6. Step 6: Final answer
    x = 10,584.91

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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.