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Finding the Fourth Proportional to 905,527.42, 1,357,241.28 and 853,039.42

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Solution

The fourth proportional to 905,527.42, 1,357,241.28 and 853,039.42 is: 1,278,570.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,527.42 : 1,357,241.28 = 853,039.42 : x
  2. Step 2: Convert to fraction form
    905,527.42/1,357,241.28 = 853,039.42/x
  3. Step 3: Cross multiply
    905,527.42x = 1,357,241.28 × 853,039.42
  4. Step 4: Simplify right side
    905,527.42x = 1,157,780,314,291.26
  5. Step 5: Solve for x
    x = 1,157,780,314,291.26/905,527.42
  6. Step 6: Final answer
    x = 1,278,570.13

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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.