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Finding the Fourth Proportional to 52,379.90, 78,570.59 and 14,939.98

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Solution

The fourth proportional to 52,379.90, 78,570.59 and 14,939.98 is: 22,410.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,379.90 : 78,570.59 = 14,939.98 : x
  2. Step 2: Convert to fraction form
    52,379.90/78,570.59 = 14,939.98/x
  3. Step 3: Cross multiply
    52,379.90x = 78,570.59 × 14,939.98
  4. Step 4: Simplify right side
    52,379.90x = 1,173,843,043.19
  5. Step 5: Solve for x
    x = 1,173,843,043.19/52,379.90
  6. Step 6: Final answer
    x = 22,410.18

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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.