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Finding the Fourth Proportional to 49,368.94, 74,062.65 and 19,789.11

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Solution

The fourth proportional to 49,368.94, 74,062.65 and 19,789.11 is: 29,687.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,368.94 : 74,062.65 = 19,789.11 : x
  2. Step 2: Convert to fraction form
    49,368.94/74,062.65 = 19,789.11/x
  3. Step 3: Cross multiply
    49,368.94x = 74,062.65 × 19,789.11
  4. Step 4: Simplify right side
    49,368.94x = 1,465,634,001.95
  5. Step 5: Solve for x
    x = 1,465,634,001.95/49,368.94
  6. Step 6: Final answer
    x = 29,687.37

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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.