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Finding the Fourth Proportional to 281,179.54, 388,027.80 and 153,855.16

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Solution

The fourth proportional to 281,179.54, 388,027.80 and 153,855.16 is: 212,320.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,179.54 : 388,027.80 = 153,855.16 : x
  2. Step 2: Convert to fraction form
    281,179.54/388,027.80 = 153,855.16/x
  3. Step 3: Cross multiply
    281,179.54x = 388,027.80 × 153,855.16
  4. Step 4: Simplify right side
    281,179.54x = 59,700,079,253.45
  5. Step 5: Solve for x
    x = 59,700,079,253.45/281,179.54
  6. Step 6: Final answer
    x = 212,320.14

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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.