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Finding the Fourth Proportional to 65,328.40, 97,798.20 and 39,019.60

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Solution

The fourth proportional to 65,328.40, 97,798.20 and 39,019.60 is: 58,413.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,328.40 : 97,798.20 = 39,019.60 : x
  2. Step 2: Convert to fraction form
    65,328.40/97,798.20 = 39,019.60/x
  3. Step 3: Cross multiply
    65,328.40x = 97,798.20 × 39,019.60
  4. Step 4: Simplify right side
    65,328.40x = 3,816,046,644.72
  5. Step 5: Solve for x
    x = 3,816,046,644.72/65,328.40
  6. Step 6: Final answer
    x = 58,413.29

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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.