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Finding the Fourth Proportional to 459,680.92, 688,095.78 and 248,795.80

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Solution

The fourth proportional to 459,680.92, 688,095.78 and 248,795.80 is: 372,422.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,680.92 : 688,095.78 = 248,795.80 : x
  2. Step 2: Convert to fraction form
    459,680.92/688,095.78 = 248,795.80/x
  3. Step 3: Cross multiply
    459,680.92x = 688,095.78 × 248,795.80
  4. Step 4: Simplify right side
    459,680.92x = 171,195,340,061.72
  5. Step 5: Solve for x
    x = 171,195,340,061.72/459,680.92
  6. Step 6: Final answer
    x = 372,422.11

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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.