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Finding the Fourth Proportional to 186,397.43, 279,319.66 and 136,907.51

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Solution

The fourth proportional to 186,397.43, 279,319.66 and 136,907.51 is: 205,158.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,397.43 : 279,319.66 = 136,907.51 : x
  2. Step 2: Convert to fraction form
    186,397.43/279,319.66 = 136,907.51/x
  3. Step 3: Cross multiply
    186,397.43x = 279,319.66 × 136,907.51
  4. Step 4: Simplify right side
    186,397.43x = 38,240,957,405.78
  5. Step 5: Solve for x
    x = 38,240,957,405.78/186,397.43
  6. Step 6: Final answer
    x = 205,158.19

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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.