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Finding the Fourth Proportional to 511,994.65, 706,569.59 and 279,434.29

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Solution

The fourth proportional to 511,994.65, 706,569.59 and 279,434.29 is: 385,628.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,994.65 : 706,569.59 = 279,434.29 : x
  2. Step 2: Convert to fraction form
    511,994.65/706,569.59 = 279,434.29/x
  3. Step 3: Cross multiply
    511,994.65x = 706,569.59 × 279,434.29
  4. Step 4: Simplify right side
    511,994.65x = 197,439,771,717.24
  5. Step 5: Solve for x
    x = 197,439,771,717.24/511,994.65
  6. Step 6: Final answer
    x = 385,628.58

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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.