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Finding the Fourth Proportional to 249,698.84, 374,583.79 and 81,164.97

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Solution

The fourth proportional to 249,698.84, 374,583.79 and 81,164.97 is: 121,759.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,698.84 : 374,583.79 = 81,164.97 : x
  2. Step 2: Convert to fraction form
    249,698.84/374,583.79 = 81,164.97/x
  3. Step 3: Cross multiply
    249,698.84x = 374,583.79 × 81,164.97
  4. Step 4: Simplify right side
    249,698.84x = 30,403,082,179.29
  5. Step 5: Solve for x
    x = 30,403,082,179.29/249,698.84
  6. Step 6: Final answer
    x = 121,759.01

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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.