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Finding the Fourth Proportional to 9,957.20, 14,932.40 and 4,406.80

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Solution

The fourth proportional to 9,957.20, 14,932.40 and 4,406.80 is: 6,608.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,957.20 : 14,932.40 = 4,406.80 : x
  2. Step 2: Convert to fraction form
    9,957.20/14,932.40 = 4,406.80/x
  3. Step 3: Cross multiply
    9,957.20x = 14,932.40 × 4,406.80
  4. Step 4: Simplify right side
    9,957.20x = 65,804,100.32
  5. Step 5: Solve for x
    x = 65,804,100.32/9,957.20
  6. Step 6: Final answer
    x = 6,608.70

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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.