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Finding the Fourth Proportional to 261,988.33, 392,653.89 and 112,052.62

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Solution

The fourth proportional to 261,988.33, 392,653.89 and 112,052.62 is: 167,938.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,988.33 : 392,653.89 = 112,052.62 : x
  2. Step 2: Convert to fraction form
    261,988.33/392,653.89 = 112,052.62/x
  3. Step 3: Cross multiply
    261,988.33x = 392,653.89 × 112,052.62
  4. Step 4: Simplify right side
    261,988.33x = 43,997,897,127.69
  5. Step 5: Solve for x
    x = 43,997,897,127.69/261,988.33
  6. Step 6: Final answer
    x = 167,938.39

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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.