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Finding the Fourth Proportional to 18,732.76, 28,077.54 and 7,038.52

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Solution

The fourth proportional to 18,732.76, 28,077.54 and 7,038.52 is: 10,549.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,732.76 : 28,077.54 = 7,038.52 : x
  2. Step 2: Convert to fraction form
    18,732.76/28,077.54 = 7,038.52/x
  3. Step 3: Cross multiply
    18,732.76x = 28,077.54 × 7,038.52
  4. Step 4: Simplify right side
    18,732.76x = 197,624,326.84
  5. Step 5: Solve for x
    x = 197,624,326.84/18,732.76
  6. Step 6: Final answer
    x = 10,549.66

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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.