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Finding the Fourth Proportional to 261,501.92, 360,869.28 and 154,076.48

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Solution

The fourth proportional to 261,501.92, 360,869.28 and 154,076.48 is: 212,623.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,501.92 : 360,869.28 = 154,076.48 : x
  2. Step 2: Convert to fraction form
    261,501.92/360,869.28 = 154,076.48/x
  3. Step 3: Cross multiply
    261,501.92x = 360,869.28 × 154,076.48
  4. Step 4: Simplify right side
    261,501.92x = 55,601,468,402.53
  5. Step 5: Solve for x
    x = 55,601,468,402.53/261,501.92
  6. Step 6: Final answer
    x = 212,623.56

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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.