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Finding the Fourth Proportional to 261,262.89, 392,029.20 and 111,462.98

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Solution

The fourth proportional to 261,262.89, 392,029.20 and 111,462.98 is: 167,252.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,262.89 : 392,029.20 = 111,462.98 : x
  2. Step 2: Convert to fraction form
    261,262.89/392,029.20 = 111,462.98/x
  3. Step 3: Cross multiply
    261,262.89x = 392,029.20 × 111,462.98
  4. Step 4: Simplify right side
    261,262.89x = 43,696,742,879.02
  5. Step 5: Solve for x
    x = 43,696,742,879.02/261,262.89
  6. Step 6: Final answer
    x = 167,252.01

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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.