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Finding the Fourth Proportional to 18,773.51, 25,907.45 and 10,815.66

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Solution

The fourth proportional to 18,773.51, 25,907.45 and 10,815.66 is: 14,925.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.51 : 25,907.45 = 10,815.66 : x
  2. Step 2: Convert to fraction form
    18,773.51/25,907.45 = 10,815.66/x
  3. Step 3: Cross multiply
    18,773.51x = 25,907.45 × 10,815.66
  4. Step 4: Simplify right side
    18,773.51x = 280,206,116.59
  5. Step 5: Solve for x
    x = 280,206,116.59/18,773.51
  6. Step 6: Final answer
    x = 14,925.62

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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.