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Finding the Fourth Proportional to 625,783.04, 863,527.20 and 353,837.60

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Solution

The fourth proportional to 625,783.04, 863,527.20 and 353,837.60 is: 488,265.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,783.04 : 863,527.20 = 353,837.60 : x
  2. Step 2: Convert to fraction form
    625,783.04/863,527.20 = 353,837.60/x
  3. Step 3: Cross multiply
    625,783.04x = 863,527.20 × 353,837.60
  4. Step 4: Simplify right side
    625,783.04x = 305,548,391,982.72
  5. Step 5: Solve for x
    x = 305,548,391,982.72/625,783.04
  6. Step 6: Final answer
    x = 488,265.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.