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Finding the Fourth Proportional to 113,390.48, 169,842.72 and 92,230.08

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Solution

The fourth proportional to 113,390.48, 169,842.72 and 92,230.08 is: 138,147.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,390.48 : 169,842.72 = 92,230.08 : x
  2. Step 2: Convert to fraction form
    113,390.48/169,842.72 = 92,230.08/x
  3. Step 3: Cross multiply
    113,390.48x = 169,842.72 × 92,230.08
  4. Step 4: Simplify right side
    113,390.48x = 15,664,607,653.02
  5. Step 5: Solve for x
    x = 15,664,607,653.02/113,390.48
  6. Step 6: Final answer
    x = 138,147.47

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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.