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Finding the Fourth Proportional to 132,409.37, 182,728.49 and 71,984.11

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Solution

The fourth proportional to 132,409.37, 182,728.49 and 71,984.11 is: 99,340.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,409.37 : 182,728.49 = 71,984.11 : x
  2. Step 2: Convert to fraction form
    132,409.37/182,728.49 = 71,984.11/x
  3. Step 3: Cross multiply
    132,409.37x = 182,728.49 × 71,984.11
  4. Step 4: Simplify right side
    132,409.37x = 13,153,547,724.29
  5. Step 5: Solve for x
    x = 13,153,547,724.29/132,409.37
  6. Step 6: Final answer
    x = 99,340.01

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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.