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Finding the Fourth Proportional to 172,497.90, 258,211.71 and 93,415.98

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Solution

The fourth proportional to 172,497.90, 258,211.71 and 93,415.98 is: 139,834.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,497.90 : 258,211.71 = 93,415.98 : x
  2. Step 2: Convert to fraction form
    172,497.90/258,211.71 = 93,415.98/x
  3. Step 3: Cross multiply
    172,497.90x = 258,211.71 × 93,415.98
  4. Step 4: Simplify right side
    172,497.90x = 24,121,099,937.13
  5. Step 5: Solve for x
    x = 24,121,099,937.13/172,497.90
  6. Step 6: Final answer
    x = 139,834.17

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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.