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Finding the Fourth Proportional to 119,432.80, 164,798.44 and 68,435.72

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Solution

The fourth proportional to 119,432.80, 164,798.44 and 68,435.72 is: 94,430.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,432.80 : 164,798.44 = 68,435.72 : x
  2. Step 2: Convert to fraction form
    119,432.80/164,798.44 = 68,435.72/x
  3. Step 3: Cross multiply
    119,432.80x = 164,798.44 × 68,435.72
  4. Step 4: Simplify right side
    119,432.80x = 11,278,099,519.19
  5. Step 5: Solve for x
    x = 11,278,099,519.19/119,432.80
  6. Step 6: Final answer
    x = 94,430.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.