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Finding the Fourth Proportional to 1,316,913.78, 1,973,845.85 and 605,448.66

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Solution

The fourth proportional to 1,316,913.78, 1,973,845.85 and 605,448.66 is: 907,471.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,913.78 : 1,973,845.85 = 605,448.66 : x
  2. Step 2: Convert to fraction form
    1,316,913.78/1,973,845.85 = 605,448.66/x
  3. Step 3: Cross multiply
    1,316,913.78x = 1,973,845.85 × 605,448.66
  4. Step 4: Simplify right side
    1,316,913.78x = 1,195,062,324,929.06
  5. Step 5: Solve for x
    x = 1,195,062,324,929.06/1,316,913.78
  6. Step 6: Final answer
    x = 907,471.96

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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.