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Finding the Fourth Proportional to 268,607.66, 402,916.14 and 91,119.24

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Solution

The fourth proportional to 268,607.66, 402,916.14 and 91,119.24 is: 136,680.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,607.66 : 402,916.14 = 91,119.24 : x
  2. Step 2: Convert to fraction form
    268,607.66/402,916.14 = 91,119.24/x
  3. Step 3: Cross multiply
    268,607.66x = 402,916.14 × 91,119.24
  4. Step 4: Simplify right side
    268,607.66x = 36,713,412,460.53
  5. Step 5: Solve for x
    x = 36,713,412,460.53/268,607.66
  6. Step 6: Final answer
    x = 136,680.44

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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.