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Finding the Fourth Proportional to 111,099.17, 153,319.08 and 65,760.60

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Solution

The fourth proportional to 111,099.17, 153,319.08 and 65,760.60 is: 90,750.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,099.17 : 153,319.08 = 65,760.60 : x
  2. Step 2: Convert to fraction form
    111,099.17/153,319.08 = 65,760.60/x
  3. Step 3: Cross multiply
    111,099.17x = 153,319.08 × 65,760.60
  4. Step 4: Simplify right side
    111,099.17x = 10,082,355,513.80
  5. Step 5: Solve for x
    x = 10,082,355,513.80/111,099.17
  6. Step 6: Final answer
    x = 90,750.95

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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.