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Finding the Fourth Proportional to 897,999.80, 1,346,999.70 and 853,713.05

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Solution

The fourth proportional to 897,999.80, 1,346,999.70 and 853,713.05 is: 1,280,569.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,999.80 : 1,346,999.70 = 853,713.05 : x
  2. Step 2: Convert to fraction form
    897,999.80/1,346,999.70 = 853,713.05/x
  3. Step 3: Cross multiply
    897,999.80x = 1,346,999.70 × 853,713.05
  4. Step 4: Simplify right side
    897,999.80x = 1,149,951,222,236.09
  5. Step 5: Solve for x
    x = 1,149,951,222,236.09/897,999.80
  6. Step 6: Final answer
    x = 1,280,569.58

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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.