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Finding the Fourth Proportional to 592,915.68, 818,219.91 and 320,981.60

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Solution

The fourth proportional to 592,915.68, 818,219.91 and 320,981.60 is: 442,952.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,915.68 : 818,219.91 = 320,981.60 : x
  2. Step 2: Convert to fraction form
    592,915.68/818,219.91 = 320,981.60/x
  3. Step 3: Cross multiply
    592,915.68x = 818,219.91 × 320,981.60
  4. Step 4: Simplify right side
    592,915.68x = 262,633,539,112.89
  5. Step 5: Solve for x
    x = 262,633,539,112.89/592,915.68
  6. Step 6: Final answer
    x = 442,952.60

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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.