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Finding the Fourth Proportional to 19,193.70, 26,486.96 and 10,810.20

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Solution

The fourth proportional to 19,193.70, 26,486.96 and 10,810.20 is: 14,917.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,193.70 : 26,486.96 = 10,810.20 : x
  2. Step 2: Convert to fraction form
    19,193.70/26,486.96 = 10,810.20/x
  3. Step 3: Cross multiply
    19,193.70x = 26,486.96 × 10,810.20
  4. Step 4: Simplify right side
    19,193.70x = 286,329,280.94
  5. Step 5: Solve for x
    x = 286,329,280.94/19,193.70
  6. Step 6: Final answer
    x = 14,917.88

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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.