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Finding the Fourth Proportional to 82,045.94, 123,068.90 and 19,716.44

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Solution

The fourth proportional to 82,045.94, 123,068.90 and 19,716.44 is: 29,574.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,045.94 : 123,068.90 = 19,716.44 : x
  2. Step 2: Convert to fraction form
    82,045.94/123,068.90 = 19,716.44/x
  3. Step 3: Cross multiply
    82,045.94x = 123,068.90 × 19,716.44
  4. Step 4: Simplify right side
    82,045.94x = 2,426,480,582.72
  5. Step 5: Solve for x
    x = 2,426,480,582.72/82,045.94
  6. Step 6: Final answer
    x = 29,574.66

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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.