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Finding the Fourth Proportional to 346,713.80, 518,918.70 and 251,673.80

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Solution

The fourth proportional to 346,713.80, 518,918.70 and 251,673.80 is: 376,674.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,713.80 : 518,918.70 = 251,673.80 : x
  2. Step 2: Convert to fraction form
    346,713.80/518,918.70 = 251,673.80/x
  3. Step 3: Cross multiply
    346,713.80x = 518,918.70 × 251,673.80
  4. Step 4: Simplify right side
    346,713.80x = 130,598,241,120.06
  5. Step 5: Solve for x
    x = 130,598,241,120.06/346,713.80
  6. Step 6: Final answer
    x = 376,674.48

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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.