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Finding the Fourth Proportional to 210,396.16, 315,555.32 and 92,045.44

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Solution

The fourth proportional to 210,396.16, 315,555.32 and 92,045.44 is: 138,051.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,396.16 : 315,555.32 = 92,045.44 : x
  2. Step 2: Convert to fraction form
    210,396.16/315,555.32 = 92,045.44/x
  3. Step 3: Cross multiply
    210,396.16x = 315,555.32 × 92,045.44
  4. Step 4: Simplify right side
    210,396.16x = 29,045,428,273.74
  5. Step 5: Solve for x
    x = 29,045,428,273.74/210,396.16
  6. Step 6: Final answer
    x = 138,051.13

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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.