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Finding the Fourth Proportional to 611,571.70, 917,357.55 and 517,093.30

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Solution

The fourth proportional to 611,571.70, 917,357.55 and 517,093.30 is: 775,639.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,571.70 : 917,357.55 = 517,093.30 : x
  2. Step 2: Convert to fraction form
    611,571.70/917,357.55 = 517,093.30/x
  3. Step 3: Cross multiply
    611,571.70x = 917,357.55 × 517,093.30
  4. Step 4: Simplify right side
    611,571.70x = 474,359,442,809.42
  5. Step 5: Solve for x
    x = 474,359,442,809.42/611,571.70
  6. Step 6: Final answer
    x = 775,639.95

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.