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Finding the Fourth Proportional to 232,068.80, 348,119.40 and 91,809.20

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Solution

The fourth proportional to 232,068.80, 348,119.40 and 91,809.20 is: 137,720.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    232,068.80 : 348,119.40 = 91,809.20 : x
  2. Step 2: Convert to fraction form
    232,068.80/348,119.40 = 91,809.20/x
  3. Step 3: Cross multiply
    232,068.80x = 348,119.40 × 91,809.20
  4. Step 4: Simplify right side
    232,068.80x = 31,960,563,618.48
  5. Step 5: Solve for x
    x = 31,960,563,618.48/232,068.80
  6. Step 6: Final answer
    x = 137,720.21

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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.