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Finding the Fourth Proportional to 261,750.54, 392,621.48 and 64,758.54

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Solution

The fourth proportional to 261,750.54, 392,621.48 and 64,758.54 is: 97,136.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,750.54 : 392,621.48 = 64,758.54 : x
  2. Step 2: Convert to fraction form
    261,750.54/392,621.48 = 64,758.54/x
  3. Step 3: Cross multiply
    261,750.54x = 392,621.48 × 64,758.54
  4. Step 4: Simplify right side
    261,750.54x = 25,425,593,817.44
  5. Step 5: Solve for x
    x = 25,425,593,817.44/261,750.54
  6. Step 6: Final answer
    x = 97,136.74

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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.