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Finding the Fourth Proportional to 496,886.08, 685,719.66 and 279,133.18

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Solution

The fourth proportional to 496,886.08, 685,719.66 and 279,133.18 is: 385,213.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,886.08 : 685,719.66 = 279,133.18 : x
  2. Step 2: Convert to fraction form
    496,886.08/685,719.66 = 279,133.18/x
  3. Step 3: Cross multiply
    496,886.08x = 685,719.66 × 279,133.18
  4. Step 4: Simplify right side
    496,886.08x = 191,407,109,284.32
  5. Step 5: Solve for x
    x = 191,407,109,284.32/496,886.08
  6. Step 6: Final answer
    x = 385,213.27

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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.