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Finding the Fourth Proportional to 144,698.40, 217,047.60 and 51,213.60

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Solution

The fourth proportional to 144,698.40, 217,047.60 and 51,213.60 is: 76,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,698.40 : 217,047.60 = 51,213.60 : x
  2. Step 2: Convert to fraction form
    144,698.40/217,047.60 = 51,213.60/x
  3. Step 3: Cross multiply
    144,698.40x = 217,047.60 × 51,213.60
  4. Step 4: Simplify right side
    144,698.40x = 11,115,788,967.36
  5. Step 5: Solve for x
    x = 11,115,788,967.36/144,698.40
  6. Step 6: Final answer
    x = 76,820.40

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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.