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Finding the Fourth Proportional to 9,979.65, 14,967.18 and 2,957.76

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Solution

The fourth proportional to 9,979.65, 14,967.18 and 2,957.76 is: 4,435.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.65 : 14,967.18 = 2,957.76 : x
  2. Step 2: Convert to fraction form
    9,979.65/14,967.18 = 2,957.76/x
  3. Step 3: Cross multiply
    9,979.65x = 14,967.18 × 2,957.76
  4. Step 4: Simplify right side
    9,979.65x = 44,269,326.32
  5. Step 5: Solve for x
    x = 44,269,326.32/9,979.65
  6. Step 6: Final answer
    x = 4,435.96

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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.