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Finding the Fourth Proportional to 261,392.49, 392,254.79 and 111,634.02

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Solution

The fourth proportional to 261,392.49, 392,254.79 and 111,634.02 is: 167,521.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,392.49 : 392,254.79 = 111,634.02 : x
  2. Step 2: Convert to fraction form
    261,392.49/392,254.79 = 111,634.02/x
  3. Step 3: Cross multiply
    261,392.49x = 392,254.79 × 111,634.02
  4. Step 4: Simplify right side
    261,392.49x = 43,788,978,513.79
  5. Step 5: Solve for x
    x = 43,788,978,513.79/261,392.49
  6. Step 6: Final answer
    x = 167,521.95

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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.