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Finding the Fourth Proportional to 511,281.12, 705,535.70 and 281,825.76

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Solution

The fourth proportional to 511,281.12, 705,535.70 and 281,825.76 is: 388,901.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,281.12 : 705,535.70 = 281,825.76 : x
  2. Step 2: Convert to fraction form
    511,281.12/705,535.70 = 281,825.76/x
  3. Step 3: Cross multiply
    511,281.12x = 705,535.70 × 281,825.76
  4. Step 4: Simplify right side
    511,281.12x = 198,838,134,859.63
  5. Step 5: Solve for x
    x = 198,838,134,859.63/511,281.12
  6. Step 6: Final answer
    x = 388,901.77

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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.