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Finding the Fourth Proportional to 102,575.45, 153,879.38 and 43,411.43

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Solution

The fourth proportional to 102,575.45, 153,879.38 and 43,411.43 is: 65,124.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,575.45 : 153,879.38 = 43,411.43 : x
  2. Step 2: Convert to fraction form
    102,575.45/153,879.38 = 43,411.43/x
  3. Step 3: Cross multiply
    102,575.45x = 153,879.38 × 43,411.43
  4. Step 4: Simplify right side
    102,575.45x = 6,680,123,933.31
  5. Step 5: Solve for x
    x = 6,680,123,933.31/102,575.45
  6. Step 6: Final answer
    x = 65,124.00

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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.