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Finding the Fourth Proportional to 410,828.80, 616,826.40 and 253,364.80

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Solution

The fourth proportional to 410,828.80, 616,826.40 and 253,364.80 is: 380,406.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,828.80 : 616,826.40 = 253,364.80 : x
  2. Step 2: Convert to fraction form
    410,828.80/616,826.40 = 253,364.80/x
  3. Step 3: Cross multiply
    410,828.80x = 616,826.40 × 253,364.80
  4. Step 4: Simplify right side
    410,828.80x = 156,282,097,470.72
  5. Step 5: Solve for x
    x = 156,282,097,470.72/410,828.80
  6. Step 6: Final answer
    x = 380,406.87

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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.