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Finding the Fourth Proportional to 261,588.84, 361,004.44 and 154,163.40

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Solution

The fourth proportional to 261,588.84, 361,004.44 and 154,163.40 is: 212,752.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,588.84 : 361,004.44 = 154,163.40 : x
  2. Step 2: Convert to fraction form
    261,588.84/361,004.44 = 154,163.40/x
  3. Step 3: Cross multiply
    261,588.84x = 361,004.44 × 154,163.40
  4. Step 4: Simplify right side
    261,588.84x = 55,653,671,885.50
  5. Step 5: Solve for x
    x = 55,653,671,885.50/261,588.84
  6. Step 6: Final answer
    x = 212,752.47

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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.