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Finding the Fourth Proportional to 511,341.74, 705,656.57 and 281,908.18

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Solution

The fourth proportional to 511,341.74, 705,656.57 and 281,908.18 is: 389,036.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,341.74 : 705,656.57 = 281,908.18 : x
  2. Step 2: Convert to fraction form
    511,341.74/705,656.57 = 281,908.18/x
  3. Step 3: Cross multiply
    511,341.74x = 705,656.57 × 281,908.18
  4. Step 4: Simplify right side
    511,341.74x = 198,930,359,353.74
  5. Step 5: Solve for x
    x = 198,930,359,353.74/511,341.74
  6. Step 6: Final answer
    x = 389,036.03

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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.