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Finding the Fourth Proportional to 418,876.02, 623,576.17 and 416,384.86

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Solution

The fourth proportional to 418,876.02, 623,576.17 and 416,384.86 is: 619,867.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,876.02 : 623,576.17 = 416,384.86 : x
  2. Step 2: Convert to fraction form
    418,876.02/623,576.17 = 416,384.86/x
  3. Step 3: Cross multiply
    418,876.02x = 623,576.17 × 416,384.86
  4. Step 4: Simplify right side
    418,876.02x = 259,647,676,244.79
  5. Step 5: Solve for x
    x = 259,647,676,244.79/418,876.02
  6. Step 6: Final answer
    x = 619,867.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.