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Finding the Fourth Proportional to 163,746, 225,969.48 and 93,090

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Solution

The fourth proportional to 163,746, 225,969.48 and 93,090 is: 128,464.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,746 : 225,969.48 = 93,090 : x
  2. Step 2: Convert to fraction form
    163,746/225,969.48 = 93,090/x
  3. Step 3: Cross multiply
    163,746x = 225,969.48 × 93,090
  4. Step 4: Simplify right side
    163,746x = 21,035,498,893.20
  5. Step 5: Solve for x
    x = 21,035,498,893.20/163,746
  6. Step 6: Final answer
    x = 128,464.20

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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.