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Finding the Fourth Proportional to 525,615.89, 787,278.68 and 345,497.98

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Solution

The fourth proportional to 525,615.89, 787,278.68 and 345,497.98 is: 517,494.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,615.89 : 787,278.68 = 345,497.98 : x
  2. Step 2: Convert to fraction form
    525,615.89/787,278.68 = 345,497.98/x
  3. Step 3: Cross multiply
    525,615.89x = 787,278.68 × 345,497.98
  4. Step 4: Simplify right side
    525,615.89x = 272,003,192,713.15
  5. Step 5: Solve for x
    x = 272,003,192,713.15/525,615.89
  6. Step 6: Final answer
    x = 517,494.24

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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.