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Finding the Fourth Proportional to 11,957.18, 16,483.64 and 7,917.25

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Solution

The fourth proportional to 11,957.18, 16,483.64 and 7,917.25 is: 10,914.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,957.18 : 16,483.64 = 7,917.25 : x
  2. Step 2: Convert to fraction form
    11,957.18/16,483.64 = 7,917.25/x
  3. Step 3: Cross multiply
    11,957.18x = 16,483.64 × 7,917.25
  4. Step 4: Simplify right side
    11,957.18x = 130,505,017.99
  5. Step 5: Solve for x
    x = 130,505,017.99/11,957.18
  6. Step 6: Final answer
    x = 10,914.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.