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Finding the Fourth Proportional to 132,468.29, 183,287.61 and 115,507.90

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Solution

The fourth proportional to 132,468.29, 183,287.61 and 115,507.90 is: 159,820.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,468.29 : 183,287.61 = 115,507.90 : x
  2. Step 2: Convert to fraction form
    132,468.29/183,287.61 = 115,507.90/x
  3. Step 3: Cross multiply
    132,468.29x = 183,287.61 × 115,507.90
  4. Step 4: Simplify right side
    132,468.29x = 21,171,166,927.12
  5. Step 5: Solve for x
    x = 21,171,166,927.12/132,468.29
  6. Step 6: Final answer
    x = 159,820.64

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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.