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Finding the Fourth Proportional to 174,580.10, 240,920.79 and 99,128.60

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Solution

The fourth proportional to 174,580.10, 240,920.79 and 99,128.60 is: 136,797.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,580.10 : 240,920.79 = 99,128.60 : x
  2. Step 2: Convert to fraction form
    174,580.10/240,920.79 = 99,128.60/x
  3. Step 3: Cross multiply
    174,580.10x = 240,920.79 × 99,128.60
  4. Step 4: Simplify right side
    174,580.10x = 23,882,140,623.59
  5. Step 5: Solve for x
    x = 23,882,140,623.59/174,580.10
  6. Step 6: Final answer
    x = 136,797.61

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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.