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Finding the Fourth Proportional to 172,413.99, 258,492.13 and 118,953.42

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Solution

The fourth proportional to 172,413.99, 258,492.13 and 118,953.42 is: 178,341.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,413.99 : 258,492.13 = 118,953.42 : x
  2. Step 2: Convert to fraction form
    172,413.99/258,492.13 = 118,953.42/x
  3. Step 3: Cross multiply
    172,413.99x = 258,492.13 × 118,953.42
  4. Step 4: Simplify right side
    172,413.99x = 30,748,522,176.27
  5. Step 5: Solve for x
    x = 30,748,522,176.27/172,413.99
  6. Step 6: Final answer
    x = 178,341.23

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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.