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Finding the Fourth Proportional to 511,134.39, 705,370.29 and 281,700.04

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Solution

The fourth proportional to 511,134.39, 705,370.29 and 281,700.04 is: 388,748.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,134.39 : 705,370.29 = 281,700.04 : x
  2. Step 2: Convert to fraction form
    511,134.39/705,370.29 = 281,700.04/x
  3. Step 3: Cross multiply
    511,134.39x = 705,370.29 × 281,700.04
  4. Step 4: Simplify right side
    511,134.39x = 198,702,838,907.81
  5. Step 5: Solve for x
    x = 198,702,838,907.81/511,134.39
  6. Step 6: Final answer
    x = 388,748.72

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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.