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Finding the Fourth Proportional to 8,702.80, 13,046.10 and 6,070.30

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Solution

The fourth proportional to 8,702.80, 13,046.10 and 6,070.30 is: 9,099.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.80 : 13,046.10 = 6,070.30 : x
  2. Step 2: Convert to fraction form
    8,702.80/13,046.10 = 6,070.30/x
  3. Step 3: Cross multiply
    8,702.80x = 13,046.10 × 6,070.30
  4. Step 4: Simplify right side
    8,702.80x = 79,193,740.83
  5. Step 5: Solve for x
    x = 79,193,740.83/8,702.80
  6. Step 6: Final answer
    x = 9,099.80

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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.