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Finding the Fourth Proportional to 79,725.60, 119,440.80 and 46,461.60

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Solution

The fourth proportional to 79,725.60, 119,440.80 and 46,461.60 is: 69,606.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,725.60 : 119,440.80 = 46,461.60 : x
  2. Step 2: Convert to fraction form
    79,725.60/119,440.80 = 46,461.60/x
  3. Step 3: Cross multiply
    79,725.60x = 119,440.80 × 46,461.60
  4. Step 4: Simplify right side
    79,725.60x = 5,549,410,673.28
  5. Step 5: Solve for x
    x = 5,549,410,673.28/79,725.60
  6. Step 6: Final answer
    x = 69,606.38

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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.