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Finding the Fourth Proportional to 261,364.50, 392,049.78 and 248,616.72

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Solution

The fourth proportional to 261,364.50, 392,049.78 and 248,616.72 is: 372,927.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,364.50 : 392,049.78 = 248,616.72 : x
  2. Step 2: Convert to fraction form
    261,364.50/392,049.78 = 248,616.72/x
  3. Step 3: Cross multiply
    261,364.50x = 392,049.78 × 248,616.72
  4. Step 4: Simplify right side
    261,364.50x = 97,470,130,380.32
  5. Step 5: Solve for x
    x = 97,470,130,380.32/261,364.50
  6. Step 6: Final answer
    x = 372,927.96

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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.