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Finding the Fourth Proportional to 261,916.64, 392,611.92 and 84,293.12

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Solution

The fourth proportional to 261,916.64, 392,611.92 and 84,293.12 is: 126,355.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,916.64 : 392,611.92 = 84,293.12 : x
  2. Step 2: Convert to fraction form
    261,916.64/392,611.92 = 84,293.12/x
  3. Step 3: Cross multiply
    261,916.64x = 392,611.92 × 84,293.12
  4. Step 4: Simplify right side
    261,916.64x = 33,094,483,685.99
  5. Step 5: Solve for x
    x = 33,094,483,685.99/261,916.64
  6. Step 6: Final answer
    x = 126,355.03

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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.