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Finding the Fourth Proportional to 112,376.95, 168,564.81 and 45,816.82

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Solution

The fourth proportional to 112,376.95, 168,564.81 and 45,816.82 is: 68,724.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,376.95 : 168,564.81 = 45,816.82 : x
  2. Step 2: Convert to fraction form
    112,376.95/168,564.81 = 45,816.82/x
  3. Step 3: Cross multiply
    112,376.95x = 168,564.81 × 45,816.82
  4. Step 4: Simplify right side
    112,376.95x = 7,723,103,308.51
  5. Step 5: Solve for x
    x = 7,723,103,308.51/112,376.95
  6. Step 6: Final answer
    x = 68,724.98

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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.