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Finding the Fourth Proportional to 124,503.96, 171,829.80 and 69,318.84

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Solution

The fourth proportional to 124,503.96, 171,829.80 and 69,318.84 is: 95,667.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,503.96 : 171,829.80 = 69,318.84 : x
  2. Step 2: Convert to fraction form
    124,503.96/171,829.80 = 69,318.84/x
  3. Step 3: Cross multiply
    124,503.96x = 171,829.80 × 69,318.84
  4. Step 4: Simplify right side
    124,503.96x = 11,911,042,413.43
  5. Step 5: Solve for x
    x = 11,911,042,413.43/124,503.96
  6. Step 6: Final answer
    x = 95,667.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.