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Finding the Fourth Proportional to 416,858.32, 575,462.82 and 279,274.15

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Solution

The fourth proportional to 416,858.32, 575,462.82 and 279,274.15 is: 385,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,858.32 : 575,462.82 = 279,274.15 : x
  2. Step 2: Convert to fraction form
    416,858.32/575,462.82 = 279,274.15/x
  3. Step 3: Cross multiply
    416,858.32x = 575,462.82 × 279,274.15
  4. Step 4: Simplify right side
    416,858.32x = 160,711,889,912.10
  5. Step 5: Solve for x
    x = 160,711,889,912.10/416,858.32
  6. Step 6: Final answer
    x = 385,531.20

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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.