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Finding the Fourth Proportional to 56,395.94, 84,595.98 and 18,957.30

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Solution

The fourth proportional to 56,395.94, 84,595.98 and 18,957.30 is: 28,436.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,395.94 : 84,595.98 = 18,957.30 : x
  2. Step 2: Convert to fraction form
    56,395.94/84,595.98 = 18,957.30/x
  3. Step 3: Cross multiply
    56,395.94x = 84,595.98 × 18,957.30
  4. Step 4: Simplify right side
    56,395.94x = 1,603,711,371.65
  5. Step 5: Solve for x
    x = 1,603,711,371.65/56,395.94
  6. Step 6: Final answer
    x = 28,436.65

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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.