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Finding the Fourth Proportional to 824,176.80, 1,235,674.80 and 318,304.80

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Solution

The fourth proportional to 824,176.80, 1,235,674.80 and 318,304.80 is: 477,229.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,176.80 : 1,235,674.80 = 318,304.80 : x
  2. Step 2: Convert to fraction form
    824,176.80/1,235,674.80 = 318,304.80/x
  3. Step 3: Cross multiply
    824,176.80x = 1,235,674.80 × 318,304.80
  4. Step 4: Simplify right side
    824,176.80x = 393,321,220,079.04
  5. Step 5: Solve for x
    x = 393,321,220,079.04/824,176.80
  6. Step 6: Final answer
    x = 477,229.18

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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.