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Finding the Fourth Proportional to 281,282.85, 388,169.68 and 153,957.33

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Solution

The fourth proportional to 281,282.85, 388,169.68 and 153,957.33 is: 212,460.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,282.85 : 388,169.68 = 153,957.33 : x
  2. Step 2: Convert to fraction form
    281,282.85/388,169.68 = 153,957.33/x
  3. Step 3: Cross multiply
    281,282.85x = 388,169.68 × 153,957.33
  4. Step 4: Simplify right side
    281,282.85x = 59,761,567,519.75
  5. Step 5: Solve for x
    x = 59,761,567,519.75/281,282.85
  6. Step 6: Final answer
    x = 212,460.76

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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.