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Finding the Fourth Proportional to 60,407.64, 83,440.98 and 45,979.80

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Solution

The fourth proportional to 60,407.64, 83,440.98 and 45,979.80 is: 63,511.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,407.64 : 83,440.98 = 45,979.80 : x
  2. Step 2: Convert to fraction form
    60,407.64/83,440.98 = 45,979.80/x
  3. Step 3: Cross multiply
    60,407.64x = 83,440.98 × 45,979.80
  4. Step 4: Simplify right side
    60,407.64x = 3,836,599,572.20
  5. Step 5: Solve for x
    x = 3,836,599,572.20/60,407.64
  6. Step 6: Final answer
    x = 63,511.83

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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.