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Finding the Fourth Proportional to 693,606.60, 1,040,409.90 and 620,123.40

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Solution

The fourth proportional to 693,606.60, 1,040,409.90 and 620,123.40 is: 930,185.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,606.60 : 1,040,409.90 = 620,123.40 : x
  2. Step 2: Convert to fraction form
    693,606.60/1,040,409.90 = 620,123.40/x
  3. Step 3: Cross multiply
    693,606.60x = 1,040,409.90 × 620,123.40
  4. Step 4: Simplify right side
    693,606.60x = 645,182,524,581.66
  5. Step 5: Solve for x
    x = 645,182,524,581.66/693,606.60
  6. Step 6: Final answer
    x = 930,185.10

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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.