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Finding the Fourth Proportional to 348,699.25, 523,048.88 and 86,043.25

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Solution

The fourth proportional to 348,699.25, 523,048.88 and 86,043.25 is: 129,064.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,699.25 : 523,048.88 = 86,043.25 : x
  2. Step 2: Convert to fraction form
    348,699.25/523,048.88 = 86,043.25/x
  3. Step 3: Cross multiply
    348,699.25x = 523,048.88 × 86,043.25
  4. Step 4: Simplify right side
    348,699.25x = 45,004,825,544.06
  5. Step 5: Solve for x
    x = 45,004,825,544.06/348,699.25
  6. Step 6: Final answer
    x = 129,064.88

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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.