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Finding the Fourth Proportional to 356,426.70, 534,635.44 and 86,557.06

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Solution

The fourth proportional to 356,426.70, 534,635.44 and 86,557.06 is: 129,834.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,426.70 : 534,635.44 = 86,557.06 : x
  2. Step 2: Convert to fraction form
    356,426.70/534,635.44 = 86,557.06/x
  3. Step 3: Cross multiply
    356,426.70x = 534,635.44 × 86,557.06
  4. Step 4: Simplify right side
    356,426.70x = 46,276,469,850.53
  5. Step 5: Solve for x
    x = 46,276,469,850.53/356,426.70
  6. Step 6: Final answer
    x = 129,834.46

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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.