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Finding the Fourth Proportional to 65,989.60, 98,984.40 and 59,999.20

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Solution

The fourth proportional to 65,989.60, 98,984.40 and 59,999.20 is: 89,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,989.60 : 98,984.40 = 59,999.20 : x
  2. Step 2: Convert to fraction form
    65,989.60/98,984.40 = 59,999.20/x
  3. Step 3: Cross multiply
    65,989.60x = 98,984.40 × 59,999.20
  4. Step 4: Simplify right side
    65,989.60x = 5,938,984,812.48
  5. Step 5: Solve for x
    x = 5,938,984,812.48/65,989.60
  6. Step 6: Final answer
    x = 89,998.80

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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.