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Finding the Fourth Proportional to 60,369.41, 90,533.61 and 20,917.32

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Solution

The fourth proportional to 60,369.41, 90,533.61 and 20,917.32 is: 31,368.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,369.41 : 90,533.61 = 20,917.32 : x
  2. Step 2: Convert to fraction form
    60,369.41/90,533.61 = 20,917.32/x
  3. Step 3: Cross multiply
    60,369.41x = 90,533.61 × 20,917.32
  4. Step 4: Simplify right side
    60,369.41x = 1,893,720,491.13
  5. Step 5: Solve for x
    x = 1,893,720,491.13/60,369.41
  6. Step 6: Final answer
    x = 31,368.88

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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.