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Finding the Fourth Proportional to 627,953.45, 866,549.34 and 356,039.62

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Solution

The fourth proportional to 627,953.45, 866,549.34 and 356,039.62 is: 491,319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,953.45 : 866,549.34 = 356,039.62 : x
  2. Step 2: Convert to fraction form
    627,953.45/866,549.34 = 356,039.62/x
  3. Step 3: Cross multiply
    627,953.45x = 866,549.34 × 356,039.62
  4. Step 4: Simplify right side
    627,953.45x = 308,525,895,558.48
  5. Step 5: Solve for x
    x = 308,525,895,558.48/627,953.45
  6. Step 6: Final answer
    x = 491,319.70

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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.