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Finding the Fourth Proportional to 356,226.45, 534,340.74 and 86,353.51

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Solution

The fourth proportional to 356,226.45, 534,340.74 and 86,353.51 is: 129,530.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,226.45 : 534,340.74 = 86,353.51 : x
  2. Step 2: Convert to fraction form
    356,226.45/534,340.74 = 86,353.51/x
  3. Step 3: Cross multiply
    356,226.45x = 534,340.74 × 86,353.51
  4. Step 4: Simplify right side
    356,226.45x = 46,142,198,435.00
  5. Step 5: Solve for x
    x = 46,142,198,435.00/356,226.45
  6. Step 6: Final answer
    x = 129,530.52

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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.