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Finding the Fourth Proportional to 573,372, 860,239.44 and 257,856.48

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Solution

The fourth proportional to 573,372, 860,239.44 and 257,856.48 is: 386,866.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,372 : 860,239.44 = 257,856.48 : x
  2. Step 2: Convert to fraction form
    573,372/860,239.44 = 257,856.48/x
  3. Step 3: Cross multiply
    573,372x = 860,239.44 × 257,856.48
  4. Step 4: Simplify right side
    573,372x = 221,818,313,955.57
  5. Step 5: Solve for x
    x = 221,818,313,955.57/573,372
  6. Step 6: Final answer
    x = 386,866.32

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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.