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Finding the Fourth Proportional to 8,675.62, 12,992.45 and 4,966.60

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Solution

The fourth proportional to 8,675.62, 12,992.45 and 4,966.60 is: 7,437.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,675.62 : 12,992.45 = 4,966.60 : x
  2. Step 2: Convert to fraction form
    8,675.62/12,992.45 = 4,966.60/x
  3. Step 3: Cross multiply
    8,675.62x = 12,992.45 × 4,966.60
  4. Step 4: Simplify right side
    8,675.62x = 64,528,302.17
  5. Step 5: Solve for x
    x = 64,528,302.17/8,675.62
  6. Step 6: Final answer
    x = 7,437.89

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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.