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Finding the Fourth Proportional to 573,153.84, 790,971.48 and 318,515.76

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Solution

The fourth proportional to 573,153.84, 790,971.48 and 318,515.76 is: 439,562.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,153.84 : 790,971.48 = 318,515.76 : x
  2. Step 2: Convert to fraction form
    573,153.84/790,971.48 = 318,515.76/x
  3. Step 3: Cross multiply
    573,153.84x = 790,971.48 × 318,515.76
  4. Step 4: Simplify right side
    573,153.84x = 251,936,882,090.53
  5. Step 5: Solve for x
    x = 251,936,882,090.53/573,153.84
  6. Step 6: Final answer
    x = 439,562.41

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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.