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Finding the Fourth Proportional to 474,650.40, 712,467.80 and 317,973.72

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Solution

The fourth proportional to 474,650.40, 712,467.80 and 317,973.72 is: 477,290.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,650.40 : 712,467.80 = 317,973.72 : x
  2. Step 2: Convert to fraction form
    474,650.40/712,467.80 = 317,973.72/x
  3. Step 3: Cross multiply
    474,650.40x = 712,467.80 × 317,973.72
  4. Step 4: Simplify right side
    474,650.40x = 226,546,036,746.22
  5. Step 5: Solve for x
    x = 226,546,036,746.22/474,650.40
  6. Step 6: Final answer
    x = 477,290.31

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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.