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Finding the Fourth Proportional to 281,860.62, 388,985.67 and 186,199.62

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Solution

The fourth proportional to 281,860.62, 388,985.67 and 186,199.62 is: 256,967.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,860.62 : 388,985.67 = 186,199.62 : x
  2. Step 2: Convert to fraction form
    281,860.62/388,985.67 = 186,199.62/x
  3. Step 3: Cross multiply
    281,860.62x = 388,985.67 × 186,199.62
  4. Step 4: Simplify right side
    281,860.62x = 72,428,983,939.45
  5. Step 5: Solve for x
    x = 72,428,983,939.45/281,860.62
  6. Step 6: Final answer
    x = 256,967.38

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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.