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Finding the Fourth Proportional to 281,748.33, 388,690.52 and 186,387.84

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Solution

The fourth proportional to 281,748.33, 388,690.52 and 186,387.84 is: 257,134.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,748.33 : 388,690.52 = 186,387.84 : x
  2. Step 2: Convert to fraction form
    281,748.33/388,690.52 = 186,387.84/x
  3. Step 3: Cross multiply
    281,748.33x = 388,690.52 × 186,387.84
  4. Step 4: Simplify right side
    281,748.33x = 72,447,185,519.34
  5. Step 5: Solve for x
    x = 72,447,185,519.34/281,748.33
  6. Step 6: Final answer
    x = 257,134.39

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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.