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Finding the Fourth Proportional to 40,696.56, 61,045.92 and 12,994.56

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Solution

The fourth proportional to 40,696.56, 61,045.92 and 12,994.56 is: 19,492.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,696.56 : 61,045.92 = 12,994.56 : x
  2. Step 2: Convert to fraction form
    40,696.56/61,045.92 = 12,994.56/x
  3. Step 3: Cross multiply
    40,696.56x = 61,045.92 × 12,994.56
  4. Step 4: Simplify right side
    40,696.56x = 793,264,870.20
  5. Step 5: Solve for x
    x = 793,264,870.20/40,696.56
  6. Step 6: Final answer
    x = 19,492.18

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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.