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Finding the Fourth Proportional to 651,195.64, 898,642.11 and 379,307.80

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Solution

The fourth proportional to 651,195.64, 898,642.11 and 379,307.80 is: 523,440.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,195.64 : 898,642.11 = 379,307.80 : x
  2. Step 2: Convert to fraction form
    651,195.64/898,642.11 = 379,307.80/x
  3. Step 3: Cross multiply
    651,195.64x = 898,642.11 × 379,307.80
  4. Step 4: Simplify right side
    651,195.64x = 340,861,961,731.46
  5. Step 5: Solve for x
    x = 340,861,961,731.46/651,195.64
  6. Step 6: Final answer
    x = 523,440.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.