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Finding the Fourth Proportional to 1,173,318, 1,619,178.84 and 636,774

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Solution

The fourth proportional to 1,173,318, 1,619,178.84 and 636,774 is: 878,748.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173,318 : 1,619,178.84 = 636,774 : x
  2. Step 2: Convert to fraction form
    1,173,318/1,619,178.84 = 636,774/x
  3. Step 3: Cross multiply
    1,173,318x = 1,619,178.84 × 636,774
  4. Step 4: Simplify right side
    1,173,318x = 1,031,050,986,662.16
  5. Step 5: Solve for x
    x = 1,031,050,986,662.16/1,173,318
  6. Step 6: Final answer
    x = 878,748.12

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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.