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Finding the Fourth Proportional to 511,304.74, 705,602.76 and 281,857.10

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Solution

The fourth proportional to 511,304.74, 705,602.76 and 281,857.10 is: 388,964.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,304.74 : 705,602.76 = 281,857.10 : x
  2. Step 2: Convert to fraction form
    511,304.74/705,602.76 = 281,857.10/x
  3. Step 3: Cross multiply
    511,304.74x = 705,602.76 × 281,857.10
  4. Step 4: Simplify right side
    511,304.74x = 198,879,147,685.60
  5. Step 5: Solve for x
    x = 198,879,147,685.60/511,304.74
  6. Step 6: Final answer
    x = 388,964.02

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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.