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Finding the Fourth Proportional to 118,413.52, 163,483.54 and 76,046.72

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Solution

The fourth proportional to 118,413.52, 163,483.54 and 76,046.72 is: 104,991.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,413.52 : 163,483.54 = 76,046.72 : x
  2. Step 2: Convert to fraction form
    118,413.52/163,483.54 = 76,046.72/x
  3. Step 3: Cross multiply
    118,413.52x = 163,483.54 × 76,046.72
  4. Step 4: Simplify right side
    118,413.52x = 12,432,386,990.99
  5. Step 5: Solve for x
    x = 12,432,386,990.99/118,413.52
  6. Step 6: Final answer
    x = 104,991.28

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1.5x scale

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.