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Finding the Fourth Proportional to 696,491.80, 961,362.79 and 454,811.90

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Solution

The fourth proportional to 696,491.80, 961,362.79 and 454,811.90 is: 627,773.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,491.80 : 961,362.79 = 454,811.90 : x
  2. Step 2: Convert to fraction form
    696,491.80/961,362.79 = 454,811.90/x
  3. Step 3: Cross multiply
    696,491.80x = 961,362.79 × 454,811.90
  4. Step 4: Simplify right side
    696,491.80x = 437,239,231,165.36
  5. Step 5: Solve for x
    x = 437,239,231,165.36/696,491.80
  6. Step 6: Final answer
    x = 627,773.70

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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.