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Finding the Fourth Proportional to 484,426.90, 726,556.51 and 147,385.90

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Solution

The fourth proportional to 484,426.90, 726,556.51 and 147,385.90 is: 221,053.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,426.90 : 726,556.51 = 147,385.90 : x
  2. Step 2: Convert to fraction form
    484,426.90/726,556.51 = 147,385.90/x
  3. Step 3: Cross multiply
    484,426.90x = 726,556.51 × 147,385.90
  4. Step 4: Simplify right side
    484,426.90x = 107,084,185,127.21
  5. Step 5: Solve for x
    x = 107,084,185,127.21/484,426.90
  6. Step 6: Final answer
    x = 221,053.34

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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.