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Finding the Fourth Proportional to 118,413.55, 163,413.01 and 64,701.94

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Solution

The fourth proportional to 118,413.55, 163,413.01 and 64,701.94 is: 89,289.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,413.55 : 163,413.01 = 64,701.94 : x
  2. Step 2: Convert to fraction form
    118,413.55/163,413.01 = 64,701.94/x
  3. Step 3: Cross multiply
    118,413.55x = 163,413.01 × 64,701.94
  4. Step 4: Simplify right side
    118,413.55x = 10,573,138,768.24
  5. Step 5: Solve for x
    x = 10,573,138,768.24/118,413.55
  6. Step 6: Final answer
    x = 89,289.94

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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.