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Finding the Fourth Proportional to 623,763.87, 860,804.05 and 351,837.16

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Solution

The fourth proportional to 623,763.87, 860,804.05 and 351,837.16 is: 485,540.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,763.87 : 860,804.05 = 351,837.16 : x
  2. Step 2: Convert to fraction form
    623,763.87/860,804.05 = 351,837.16/x
  3. Step 3: Cross multiply
    623,763.87x = 860,804.05 × 351,837.16
  4. Step 4: Simplify right side
    623,763.87x = 302,862,854,041.22
  5. Step 5: Solve for x
    x = 302,862,854,041.22/623,763.87
  6. Step 6: Final answer
    x = 485,540.88

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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.