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Finding the Fourth Proportional to 344,705.40, 517,106.54 and 91,994.13

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Solution

The fourth proportional to 344,705.40, 517,106.54 and 91,994.13 is: 138,004.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,705.40 : 517,106.54 = 91,994.13 : x
  2. Step 2: Convert to fraction form
    344,705.40/517,106.54 = 91,994.13/x
  3. Step 3: Cross multiply
    344,705.40x = 517,106.54 × 91,994.13
  4. Step 4: Simplify right side
    344,705.40x = 47,570,766,494.60
  5. Step 5: Solve for x
    x = 47,570,766,494.60/344,705.40
  6. Step 6: Final answer
    x = 138,004.12

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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.