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Finding the Fourth Proportional to 173,413.80, 260,141.55 and 61,070.81

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Solution

The fourth proportional to 173,413.80, 260,141.55 and 61,070.81 is: 91,613.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,413.80 : 260,141.55 = 61,070.81 : x
  2. Step 2: Convert to fraction form
    173,413.80/260,141.55 = 61,070.81/x
  3. Step 3: Cross multiply
    173,413.80x = 260,141.55 × 61,070.81
  4. Step 4: Simplify right side
    173,413.80x = 15,887,053,872.45
  5. Step 5: Solve for x
    x = 15,887,053,872.45/173,413.80
  6. Step 6: Final answer
    x = 91,613.55

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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.