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Finding the Fourth Proportional to 310,917.66, 466,324.32 and 86,300.92

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Solution

The fourth proportional to 310,917.66, 466,324.32 and 86,300.92 is: 129,436.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,917.66 : 466,324.32 = 86,300.92 : x
  2. Step 2: Convert to fraction form
    310,917.66/466,324.32 = 86,300.92/x
  3. Step 3: Cross multiply
    310,917.66x = 466,324.32 × 86,300.92
  4. Step 4: Simplify right side
    310,917.66x = 40,244,217,834.37
  5. Step 5: Solve for x
    x = 40,244,217,834.37/310,917.66
  6. Step 6: Final answer
    x = 129,436.90

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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.