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Finding the Fourth Proportional to 115,743.60, 173,485.80 and 65,847.60

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Solution

The fourth proportional to 115,743.60, 173,485.80 and 65,847.60 is: 98,697.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,743.60 : 173,485.80 = 65,847.60 : x
  2. Step 2: Convert to fraction form
    115,743.60/173,485.80 = 65,847.60/x
  3. Step 3: Cross multiply
    115,743.60x = 173,485.80 × 65,847.60
  4. Step 4: Simplify right side
    115,743.60x = 11,423,623,564.08
  5. Step 5: Solve for x
    x = 11,423,623,564.08/115,743.60
  6. Step 6: Final answer
    x = 98,697.67

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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.