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Finding the Fourth Proportional to 188,903.25, 260,686.49 and 104,020.11

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Solution

The fourth proportional to 188,903.25, 260,686.49 and 104,020.11 is: 143,547.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,903.25 : 260,686.49 = 104,020.11 : x
  2. Step 2: Convert to fraction form
    188,903.25/260,686.49 = 104,020.11/x
  3. Step 3: Cross multiply
    188,903.25x = 260,686.49 × 104,020.11
  4. Step 4: Simplify right side
    188,903.25x = 27,116,636,845.21
  5. Step 5: Solve for x
    x = 27,116,636,845.21/188,903.25
  6. Step 6: Final answer
    x = 143,547.75

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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.