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Finding the Fourth Proportional to 340,664.67, 511,011.11 and 127,411.20

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Solution

The fourth proportional to 340,664.67, 511,011.11 and 127,411.20 is: 191,122.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,664.67 : 511,011.11 = 127,411.20 : x
  2. Step 2: Convert to fraction form
    340,664.67/511,011.11 = 127,411.20/x
  3. Step 3: Cross multiply
    340,664.67x = 511,011.11 × 127,411.20
  4. Step 4: Simplify right side
    340,664.67x = 65,108,539,056.96
  5. Step 5: Solve for x
    x = 65,108,539,056.96/340,664.67
  6. Step 6: Final answer
    x = 191,122.08

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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.