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Finding the Fourth Proportional to 16,390.20, 24,582.90 and 4,702.20

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Solution

The fourth proportional to 16,390.20, 24,582.90 and 4,702.20 is: 7,052.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,390.20 : 24,582.90 = 4,702.20 : x
  2. Step 2: Convert to fraction form
    16,390.20/24,582.90 = 4,702.20/x
  3. Step 3: Cross multiply
    16,390.20x = 24,582.90 × 4,702.20
  4. Step 4: Simplify right side
    16,390.20x = 115,593,712.38
  5. Step 5: Solve for x
    x = 115,593,712.38/16,390.20
  6. Step 6: Final answer
    x = 7,052.61

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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.