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Finding the Fourth Proportional to 676,847.79, 933,949.04 and 418,984.11

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Solution

The fourth proportional to 676,847.79, 933,949.04 and 418,984.11 is: 578,135.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,847.79 : 933,949.04 = 418,984.11 : x
  2. Step 2: Convert to fraction form
    676,847.79/933,949.04 = 418,984.11/x
  3. Step 3: Cross multiply
    676,847.79x = 933,949.04 × 418,984.11
  4. Step 4: Simplify right side
    676,847.79x = 391,309,805,214.83
  5. Step 5: Solve for x
    x = 391,309,805,214.83/676,847.79
  6. Step 6: Final answer
    x = 578,135.60

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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.