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Finding the Fourth Proportional to 869,191.85, 1,303,787.78 and 869,191.85

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Solution

The fourth proportional to 869,191.85, 1,303,787.78 and 869,191.85 is: 1,303,787.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,191.85 : 1,303,787.78 = 869,191.85 : x
  2. Step 2: Convert to fraction form
    869,191.85/1,303,787.78 = 869,191.85/x
  3. Step 3: Cross multiply
    869,191.85x = 1,303,787.78 × 869,191.85
  4. Step 4: Simplify right side
    869,191.85x = 1,133,241,708,159.63
  5. Step 5: Solve for x
    x = 1,133,241,708,159.63/869,191.85
  6. Step 6: Final answer
    x = 1,303,787.78

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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.