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Finding the Fourth Proportional to 18,950.61, 28,425.93 and 5,801.28

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Solution

The fourth proportional to 18,950.61, 28,425.93 and 5,801.28 is: 8,701.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,950.61 : 28,425.93 = 5,801.28 : x
  2. Step 2: Convert to fraction form
    18,950.61/28,425.93 = 5,801.28/x
  3. Step 3: Cross multiply
    18,950.61x = 28,425.93 × 5,801.28
  4. Step 4: Simplify right side
    18,950.61x = 164,906,779.19
  5. Step 5: Solve for x
    x = 164,906,779.19/18,950.61
  6. Step 6: Final answer
    x = 8,701.92

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Similar ratio
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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.