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Finding the Fourth Proportional to 172,551.90, 258,903.19 and 60,312.65

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Solution

The fourth proportional to 172,551.90, 258,903.19 and 60,312.65 is: 90,495.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,551.90 : 258,903.19 = 60,312.65 : x
  2. Step 2: Convert to fraction form
    172,551.90/258,903.19 = 60,312.65/x
  3. Step 3: Cross multiply
    172,551.90x = 258,903.19 × 60,312.65
  4. Step 4: Simplify right side
    172,551.90x = 15,615,137,380.30
  5. Step 5: Solve for x
    x = 15,615,137,380.30/172,551.90
  6. Step 6: Final answer
    x = 90,495.31

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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.