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Finding the Fourth Proportional to 1,191,929.22, 1,787,853.72 and 518,010.60

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Solution

The fourth proportional to 1,191,929.22, 1,787,853.72 and 518,010.60 is: 776,998.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,929.22 : 1,787,853.72 = 518,010.60 : x
  2. Step 2: Convert to fraction form
    1,191,929.22/1,787,853.72 = 518,010.60/x
  3. Step 3: Cross multiply
    1,191,929.22x = 1,787,853.72 × 518,010.60
  4. Step 4: Simplify right side
    1,191,929.22x = 926,127,178,209.43
  5. Step 5: Solve for x
    x = 926,127,178,209.43/1,191,929.22
  6. Step 6: Final answer
    x = 776,998.47

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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.