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Finding the Fourth Proportional to 573,257.60, 859,894.80 and 218,291.28

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Solution

The fourth proportional to 573,257.60, 859,894.80 and 218,291.28 is: 327,440.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,257.60 : 859,894.80 = 218,291.28 : x
  2. Step 2: Convert to fraction form
    573,257.60/859,894.80 = 218,291.28/x
  3. Step 3: Cross multiply
    573,257.60x = 859,894.80 × 218,291.28
  4. Step 4: Simplify right side
    573,257.60x = 187,707,536,557.34
  5. Step 5: Solve for x
    x = 187,707,536,557.34/573,257.60
  6. Step 6: Final answer
    x = 327,440.12

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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.