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Finding the Fourth Proportional to 9,818.70, 14,699.12 and 6,480.80

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Solution

The fourth proportional to 9,818.70, 14,699.12 and 6,480.80 is: 9,702.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,818.70 : 14,699.12 = 6,480.80 : x
  2. Step 2: Convert to fraction form
    9,818.70/14,699.12 = 6,480.80/x
  3. Step 3: Cross multiply
    9,818.70x = 14,699.12 × 6,480.80
  4. Step 4: Simplify right side
    9,818.70x = 95,261,951.00
  5. Step 5: Solve for x
    x = 95,261,951.00/9,818.70
  6. Step 6: Final answer
    x = 9,702.09

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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.