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Finding the Fourth Proportional to 113,688.88, 170,906.93 and 105,468.04

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Solution

The fourth proportional to 113,688.88, 170,906.93 and 105,468.04 is: 158,548.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,688.88 : 170,906.93 = 105,468.04 : x
  2. Step 2: Convert to fraction form
    113,688.88/170,906.93 = 105,468.04/x
  3. Step 3: Cross multiply
    113,688.88x = 170,906.93 × 105,468.04
  4. Step 4: Simplify right side
    113,688.88x = 18,025,219,011.32
  5. Step 5: Solve for x
    x = 18,025,219,011.32/113,688.88
  6. Step 6: Final answer
    x = 158,548.66

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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.