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Finding the Fourth Proportional to 144,869.60, 217,131.60 and 60,629.60

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Solution

The fourth proportional to 144,869.60, 217,131.60 and 60,629.60 is: 90,872.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,869.60 : 217,131.60 = 60,629.60 : x
  2. Step 2: Convert to fraction form
    144,869.60/217,131.60 = 60,629.60/x
  3. Step 3: Cross multiply
    144,869.60x = 217,131.60 × 60,629.60
  4. Step 4: Simplify right side
    144,869.60x = 13,164,602,055.36
  5. Step 5: Solve for x
    x = 13,164,602,055.36/144,869.60
  6. Step 6: Final answer
    x = 90,872.08

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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.