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Finding the Fourth Proportional to 413,095.64, 619,643.46 and 132,809.72

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Solution

The fourth proportional to 413,095.64, 619,643.46 and 132,809.72 is: 199,214.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,095.64 : 619,643.46 = 132,809.72 : x
  2. Step 2: Convert to fraction form
    413,095.64/619,643.46 = 132,809.72/x
  3. Step 3: Cross multiply
    413,095.64x = 619,643.46 × 132,809.72
  4. Step 4: Simplify right side
    413,095.64x = 82,294,674,422.43
  5. Step 5: Solve for x
    x = 82,294,674,422.43/413,095.64
  6. Step 6: Final answer
    x = 199,214.58

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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.