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Finding the Fourth Proportional to 58,654.68, 87,979.14 and 19,230.36

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Solution

The fourth proportional to 58,654.68, 87,979.14 and 19,230.36 is: 28,844.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,654.68 : 87,979.14 = 19,230.36 : x
  2. Step 2: Convert to fraction form
    58,654.68/87,979.14 = 19,230.36/x
  3. Step 3: Cross multiply
    58,654.68x = 87,979.14 × 19,230.36
  4. Step 4: Simplify right side
    58,654.68x = 1,691,870,534.69
  5. Step 5: Solve for x
    x = 1,691,870,534.69/58,654.68
  6. Step 6: Final answer
    x = 28,844.60

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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.