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Finding the Fourth Proportional to 511,248.73, 705,528.18 and 281,814.88

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Solution

The fourth proportional to 511,248.73, 705,528.18 and 281,814.88 is: 388,907.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,248.73 : 705,528.18 = 281,814.88 : x
  2. Step 2: Convert to fraction form
    511,248.73/705,528.18 = 281,814.88/x
  3. Step 3: Cross multiply
    511,248.73x = 705,528.18 × 281,814.88
  4. Step 4: Simplify right side
    511,248.73x = 198,828,337,619.50
  5. Step 5: Solve for x
    x = 198,828,337,619.50/511,248.73
  6. Step 6: Final answer
    x = 388,907.25

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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.