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Finding the Fourth Proportional to 183,689.69, 253,611.31 and 112,111.20

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Solution

The fourth proportional to 183,689.69, 253,611.31 and 112,111.20 is: 154,786.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,689.69 : 253,611.31 = 112,111.20 : x
  2. Step 2: Convert to fraction form
    183,689.69/253,611.31 = 112,111.20/x
  3. Step 3: Cross multiply
    183,689.69x = 253,611.31 × 112,111.20
  4. Step 4: Simplify right side
    183,689.69x = 28,432,669,211.98
  5. Step 5: Solve for x
    x = 28,432,669,211.98/183,689.69
  6. Step 6: Final answer
    x = 154,786.42

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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.