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Finding the Fourth Proportional to 560,463.18, 773,456.18 and 318,780.51

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Solution

The fourth proportional to 560,463.18, 773,456.18 and 318,780.51 is: 439,926.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,463.18 : 773,456.18 = 318,780.51 : x
  2. Step 2: Convert to fraction form
    560,463.18/773,456.18 = 318,780.51/x
  3. Step 3: Cross multiply
    560,463.18x = 773,456.18 × 318,780.51
  4. Step 4: Simplify right side
    560,463.18x = 246,562,753,929.15
  5. Step 5: Solve for x
    x = 246,562,753,929.15/560,463.18
  6. Step 6: Final answer
    x = 439,926.77

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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.