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Finding the Fourth Proportional to 111,265.54, 153,549.21 and 65,936.16

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Solution

The fourth proportional to 111,265.54, 153,549.21 and 65,936.16 is: 90,993.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,265.54 : 153,549.21 = 65,936.16 : x
  2. Step 2: Convert to fraction form
    111,265.54/153,549.21 = 65,936.16/x
  3. Step 3: Cross multiply
    111,265.54x = 153,549.21 × 65,936.16
  4. Step 4: Simplify right side
    111,265.54x = 10,124,445,278.43
  5. Step 5: Solve for x
    x = 10,124,445,278.43/111,265.54
  6. Step 6: Final answer
    x = 90,993.54

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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.