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Finding the Fourth Proportional to 281,167.74, 388,011.06 and 153,843.30

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Solution

The fourth proportional to 281,167.74, 388,011.06 and 153,843.30 is: 212,303.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,167.74 : 388,011.06 = 153,843.30 : x
  2. Step 2: Convert to fraction form
    281,167.74/388,011.06 = 153,843.30/x
  3. Step 3: Cross multiply
    281,167.74x = 388,011.06 × 153,843.30
  4. Step 4: Simplify right side
    281,167.74x = 59,692,901,906.90
  5. Step 5: Solve for x
    x = 59,692,901,906.90/281,167.74
  6. Step 6: Final answer
    x = 212,303.52

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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.