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Finding the Fourth Proportional to 611,842.80, 916,867.80 and 548,662.80

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Solution

The fourth proportional to 611,842.80, 916,867.80 and 548,662.80 is: 822,190.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,842.80 : 916,867.80 = 548,662.80 : x
  2. Step 2: Convert to fraction form
    611,842.80/916,867.80 = 548,662.80/x
  3. Step 3: Cross multiply
    611,842.80x = 916,867.80 × 548,662.80
  4. Step 4: Simplify right side
    611,842.80x = 503,051,254,377.84
  5. Step 5: Solve for x
    x = 503,051,254,377.84/611,842.80
  6. Step 6: Final answer
    x = 822,190.36

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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.