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Finding the Fourth Proportional to 28,702.98, 43,056.95 and 7,926.48

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Solution

The fourth proportional to 28,702.98, 43,056.95 and 7,926.48 is: 11,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,702.98 : 43,056.95 = 7,926.48 : x
  2. Step 2: Convert to fraction form
    28,702.98/43,056.95 = 7,926.48/x
  3. Step 3: Cross multiply
    28,702.98x = 43,056.95 × 7,926.48
  4. Step 4: Simplify right side
    28,702.98x = 341,290,013.40
  5. Step 5: Solve for x
    x = 341,290,013.40/28,702.98
  6. Step 6: Final answer
    x = 11,890.40

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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.