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Finding the Fourth Proportional to 172,497.40, 258,210.96 and 93,415.48

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Solution

The fourth proportional to 172,497.40, 258,210.96 and 93,415.48 is: 139,833.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,497.40 : 258,210.96 = 93,415.48 : x
  2. Step 2: Convert to fraction form
    172,497.40/258,210.96 = 93,415.48/x
  3. Step 3: Cross multiply
    172,497.40x = 258,210.96 × 93,415.48
  4. Step 4: Simplify right side
    172,497.40x = 24,120,900,769.66
  5. Step 5: Solve for x
    x = 24,120,900,769.66/172,497.40
  6. Step 6: Final answer
    x = 139,833.42

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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.