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Finding the Fourth Proportional to 474,107.80, 710,168.10 and 221,603.80

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Solution

The fourth proportional to 474,107.80, 710,168.10 and 221,603.80 is: 331,941.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,107.80 : 710,168.10 = 221,603.80 : x
  2. Step 2: Convert to fraction form
    474,107.80/710,168.10 = 221,603.80/x
  3. Step 3: Cross multiply
    474,107.80x = 710,168.10 × 221,603.80
  4. Step 4: Simplify right side
    474,107.80x = 157,375,949,598.78
  5. Step 5: Solve for x
    x = 157,375,949,598.78/474,107.80
  6. Step 6: Final answer
    x = 331,941.28

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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.