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Finding the Fourth Proportional to 344,652.80, 517,003.76 and 91,931.84

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Solution

The fourth proportional to 344,652.80, 517,003.76 and 91,931.84 is: 137,904.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,652.80 : 517,003.76 = 91,931.84 : x
  2. Step 2: Convert to fraction form
    344,652.80/517,003.76 = 91,931.84/x
  3. Step 3: Cross multiply
    344,652.80x = 517,003.76 × 91,931.84
  4. Step 4: Simplify right side
    344,652.80x = 47,529,106,943.72
  5. Step 5: Solve for x
    x = 47,529,106,943.72/344,652.80
  6. Step 6: Final answer
    x = 137,904.31

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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.