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Finding the Fourth Proportional to 585,445.88, 807,619.34 and 391,861.82

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Solution

The fourth proportional to 585,445.88, 807,619.34 and 391,861.82 is: 540,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,445.88 : 807,619.34 = 391,861.82 : x
  2. Step 2: Convert to fraction form
    585,445.88/807,619.34 = 391,861.82/x
  3. Step 3: Cross multiply
    585,445.88x = 807,619.34 × 391,861.82
  4. Step 4: Simplify right side
    585,445.88x = 316,475,178,442.19
  5. Step 5: Solve for x
    x = 316,475,178,442.19/585,445.88
  6. Step 6: Final answer
    x = 540,571.20

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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.