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Finding the Fourth Proportional to 1,168,392.60, 1,638,111.60 and 1,168,392.60

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Solution

The fourth proportional to 1,168,392.60, 1,638,111.60 and 1,168,392.60 is: 1,638,111.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168,392.60 : 1,638,111.60 = 1,168,392.60 : x
  2. Step 2: Convert to fraction form
    1,168,392.60/1,638,111.60 = 1,168,392.60/x
  3. Step 3: Cross multiply
    1,168,392.60x = 1,638,111.60 × 1,168,392.60
  4. Step 4: Simplify right side
    1,168,392.60x = 1,913,957,471,414.16
  5. Step 5: Solve for x
    x = 1,913,957,471,414.16/1,168,392.60
  6. Step 6: Final answer
    x = 1,638,111.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.