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Finding the Fourth Proportional to 170,969.50, 235,931.52 and 98,383.60

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Solution

The fourth proportional to 170,969.50, 235,931.52 and 98,383.60 is: 135,765.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,969.50 : 235,931.52 = 98,383.60 : x
  2. Step 2: Convert to fraction form
    170,969.50/235,931.52 = 98,383.60/x
  3. Step 3: Cross multiply
    170,969.50x = 235,931.52 × 98,383.60
  4. Step 4: Simplify right side
    170,969.50x = 23,211,792,291.07
  5. Step 5: Solve for x
    x = 23,211,792,291.07/170,969.50
  6. Step 6: Final answer
    x = 135,765.69

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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.