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Finding the Fourth Proportional to 474,911.40, 712,367.10 and 316,021.80

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Solution

The fourth proportional to 474,911.40, 712,367.10 and 316,021.80 is: 474,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,911.40 : 712,367.10 = 316,021.80 : x
  2. Step 2: Convert to fraction form
    474,911.40/712,367.10 = 316,021.80/x
  3. Step 3: Cross multiply
    474,911.40x = 712,367.10 × 316,021.80
  4. Step 4: Simplify right side
    474,911.40x = 225,123,533,202.78
  5. Step 5: Solve for x
    x = 225,123,533,202.78/474,911.40
  6. Step 6: Final answer
    x = 474,032.70

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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.