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Finding the Fourth Proportional to 203,636.80, 281,034.15 and 113,009.88

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Solution

The fourth proportional to 203,636.80, 281,034.15 and 113,009.88 is: 155,962.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,636.80 : 281,034.15 = 113,009.88 : x
  2. Step 2: Convert to fraction form
    203,636.80/281,034.15 = 113,009.88/x
  3. Step 3: Cross multiply
    203,636.80x = 281,034.15 × 113,009.88
  4. Step 4: Simplify right side
    203,636.80x = 31,759,635,567.40
  5. Step 5: Solve for x
    x = 31,759,635,567.40/203,636.80
  6. Step 6: Final answer
    x = 155,962.16

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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.