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Finding the Fourth Proportional to 357,936.61, 536,892.57 and 91,699.74

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Solution

The fourth proportional to 357,936.61, 536,892.57 and 91,699.74 is: 137,546.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,936.61 : 536,892.57 = 91,699.74 : x
  2. Step 2: Convert to fraction form
    357,936.61/536,892.57 = 91,699.74/x
  3. Step 3: Cross multiply
    357,936.61x = 536,892.57 × 91,699.74
  4. Step 4: Simplify right side
    357,936.61x = 49,232,909,076.93
  5. Step 5: Solve for x
    x = 49,232,909,076.93/357,936.61
  6. Step 6: Final answer
    x = 137,546.45

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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.