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Finding the Fourth Proportional to 413,095.80, 619,730.10 and 132,641.40

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Solution

The fourth proportional to 413,095.80, 619,730.10 and 132,641.40 is: 198,989.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,095.80 : 619,730.10 = 132,641.40 : x
  2. Step 2: Convert to fraction form
    413,095.80/619,730.10 = 132,641.40/x
  3. Step 3: Cross multiply
    413,095.80x = 619,730.10 × 132,641.40
  4. Step 4: Simplify right side
    413,095.80x = 82,201,868,086.14
  5. Step 5: Solve for x
    x = 82,201,868,086.14/413,095.80
  6. Step 6: Final answer
    x = 198,989.84

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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.