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Finding the Fourth Proportional to 1,168,365.30, 1,640,135.10 and 1,168,365.30

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Solution

The fourth proportional to 1,168,365.30, 1,640,135.10 and 1,168,365.30 is: 1,640,135.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168,365.30 : 1,640,135.10 = 1,168,365.30 : x
  2. Step 2: Convert to fraction form
    1,168,365.30/1,640,135.10 = 1,168,365.30/x
  3. Step 3: Cross multiply
    1,168,365.30x = 1,640,135.10 × 1,168,365.30
  4. Step 4: Simplify right side
    1,168,365.30x = 1,916,276,938,152.03
  5. Step 5: Solve for x
    x = 1,916,276,938,152.03/1,168,365.30
  6. Step 6: Final answer
    x = 1,640,135.10

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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.