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Finding the Fourth Proportional to 261,689.02, 361,149.51 and 148,519.06

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Solution

The fourth proportional to 261,689.02, 361,149.51 and 148,519.06 is: 204,966.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,689.02 : 361,149.51 = 148,519.06 : x
  2. Step 2: Convert to fraction form
    261,689.02/361,149.51 = 148,519.06/x
  3. Step 3: Cross multiply
    261,689.02x = 361,149.51 × 148,519.06
  4. Step 4: Simplify right side
    261,689.02x = 53,637,585,744.66
  5. Step 5: Solve for x
    x = 53,637,585,744.66/261,689.02
  6. Step 6: Final answer
    x = 204,966.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.