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Finding the Fourth Proportional to 573,618.11, 860,419.86 and 257,851.76

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Solution

The fourth proportional to 573,618.11, 860,419.86 and 257,851.76 is: 386,774.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,618.11 : 860,419.86 = 257,851.76 : x
  2. Step 2: Convert to fraction form
    573,618.11/860,419.86 = 257,851.76/x
  3. Step 3: Cross multiply
    573,618.11x = 860,419.86 × 257,851.76
  4. Step 4: Simplify right side
    573,618.11x = 221,860,775,239.95
  5. Step 5: Solve for x
    x = 221,860,775,239.95/573,618.11
  6. Step 6: Final answer
    x = 386,774.36

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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.