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Finding the Fourth Proportional to 878,690.84, 1,317,777.93 and 373,247.80

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Solution

The fourth proportional to 878,690.84, 1,317,777.93 and 373,247.80 is: 559,761.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,690.84 : 1,317,777.93 = 373,247.80 : x
  2. Step 2: Convert to fraction form
    878,690.84/1,317,777.93 = 373,247.80/x
  3. Step 3: Cross multiply
    878,690.84x = 1,317,777.93 × 373,247.80
  4. Step 4: Simplify right side
    878,690.84x = 491,857,709,966.61
  5. Step 5: Solve for x
    x = 491,857,709,966.61/878,690.84
  6. Step 6: Final answer
    x = 559,761.97

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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.