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Finding the Fourth Proportional to 144,912.30, 217,368.45 and 60,657.90

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Solution

The fourth proportional to 144,912.30, 217,368.45 and 60,657.90 is: 90,986.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,912.30 : 217,368.45 = 60,657.90 : x
  2. Step 2: Convert to fraction form
    144,912.30/217,368.45 = 60,657.90/x
  3. Step 3: Cross multiply
    144,912.30x = 217,368.45 × 60,657.90
  4. Step 4: Simplify right side
    144,912.30x = 13,185,113,703.26
  5. Step 5: Solve for x
    x = 13,185,113,703.26/144,912.30
  6. Step 6: Final answer
    x = 90,986.85

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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.