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Finding the Fourth Proportional to 474,058.90, 710,698.80 and 221,214.37

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Solution

The fourth proportional to 474,058.90, 710,698.80 and 221,214.37 is: 331,639.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,058.90 : 710,698.80 = 221,214.37 : x
  2. Step 2: Convert to fraction form
    474,058.90/710,698.80 = 221,214.37/x
  3. Step 3: Cross multiply
    474,058.90x = 710,698.80 × 221,214.37
  4. Step 4: Simplify right side
    474,058.90x = 157,216,784,132.87
  5. Step 5: Solve for x
    x = 157,216,784,132.87/474,058.90
  6. Step 6: Final answer
    x = 331,639.77

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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.