Home / 323,623.09-485,434.21-86,965.77

Finding the Fourth Proportional to 323,623.09, 485,434.21 and 86,965.77

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Solution

The fourth proportional to 323,623.09, 485,434.21 and 86,965.77 is: 130,448.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,623.09 : 485,434.21 = 86,965.77 : x
  2. Step 2: Convert to fraction form
    323,623.09/485,434.21 = 86,965.77/x
  3. Step 3: Cross multiply
    323,623.09x = 485,434.21 × 86,965.77
  4. Step 4: Simplify right side
    323,623.09x = 42,216,159,856.99
  5. Step 5: Solve for x
    x = 42,216,159,856.99/323,623.09
  6. Step 6: Final answer
    x = 130,448.54

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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.