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Finding the Fourth Proportional to 112,176.94, 154,820.94 and 71,936.14

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Solution

The fourth proportional to 112,176.94, 154,820.94 and 71,936.14 is: 99,282.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,176.94 : 154,820.94 = 71,936.14 : x
  2. Step 2: Convert to fraction form
    112,176.94/154,820.94 = 71,936.14/x
  3. Step 3: Cross multiply
    112,176.94x = 154,820.94 × 71,936.14
  4. Step 4: Simplify right side
    112,176.94x = 11,137,220,814.77
  5. Step 5: Solve for x
    x = 11,137,220,814.77/112,176.94
  6. Step 6: Final answer
    x = 99,282.62

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1.5x scale

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.