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Finding the Fourth Proportional to 65,801.20, 98,413.80 and 58,831.60

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Solution

The fourth proportional to 65,801.20, 98,413.80 and 58,831.60 is: 87,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,801.20 : 98,413.80 = 58,831.60 : x
  2. Step 2: Convert to fraction form
    65,801.20/98,413.80 = 58,831.60/x
  3. Step 3: Cross multiply
    65,801.20x = 98,413.80 × 58,831.60
  4. Step 4: Simplify right side
    65,801.20x = 5,789,841,316.08
  5. Step 5: Solve for x
    x = 5,789,841,316.08/65,801.20
  6. Step 6: Final answer
    x = 87,989.90

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1.5x scale

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.