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Finding the Fourth Proportional to 56,368.30, 84,553.80 and 18,929.58

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Solution

The fourth proportional to 56,368.30, 84,553.80 and 18,929.58 is: 28,394.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,368.30 : 84,553.80 = 18,929.58 : x
  2. Step 2: Convert to fraction form
    56,368.30/84,553.80 = 18,929.58/x
  3. Step 3: Cross multiply
    56,368.30x = 84,553.80 × 18,929.58
  4. Step 4: Simplify right side
    56,368.30x = 1,600,567,921.40
  5. Step 5: Solve for x
    x = 1,600,567,921.40/56,368.30
  6. Step 6: Final answer
    x = 28,394.82

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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.